Rewrite the following sentences so that their meaning stays the same, using the words in the brackets. 
$7.$ My mother didn’t mind our singing. We did it quietly. (since)

$→$ My mother didn't mind our singing since we did it quietly.

Trans : Mẹ tôi không thấy phiền về việc chúng tôi hát bởi vì chúng tôi làm việc đó rất nhỏ.
$8.$ Cats cannot swim as well as dogs. (better)

$→$ Dogs can swim better than cats.

$S_1$ + V + more + long adv / short adv + er + than + $S_2$.
$9.$ Would you like to play a game of tennis now?      (fancy)

$→$ Do you fancy playing a game of tennis now ?

Do/Does + S + fancy + V_ing ?
$10.$ How much are those trainers?              (cost) .

$→$ How much do those trainers cost ?

How much + do/does + something + cost ?
$11.$ Which costume do you like better, the Tay’s or the Pathen’s?  (prefer)

$→$ Which costume do you prefer to, the Tay's or the Pathen's ?

Which + N + do/does + S + V, something or something ?
$12.$ Lang Lieu was very poor. He couldn’t buy any special food. (because)

$→$ Because Lang Lieu was very poor, he couldn't buy any special food.

Because S + V, S + V.
$13.$ During Tet, Vietnamese people buy all kinds of sweets. They make Chung cakes as well.  (and)

$→$ During Tet, Vietnamese people buy all kinds of sweets and make Chung cakes.

S + V and + V.
$14.$ The Hung King Temple Festival was a local festival. It has become a public holiday in Viet Nam since 2007. (however)

$→$ The Hung King Temple Festival was a local festival; however, it has becme a public hoiday in Viet Nam since 2007.

S + V; however, S + V.
$15.$ At the Mid-Autumn Festival, kids can sing, dance, and enjoy moon-cakes. Every child like it very much. (therefore)

$→$ At the Mid-Autumn Festival, kids can sing, dance and enjoy moon-cakes; therefore, every child like it very much.

S + V; therefore, S + V.
$16.$ Children like Tet because it’s a long holiday. They can also receive lucky money. (moreover)

$→$ Children like Tet because it's a long holiday; moreover, they can also receive lucky money.

S + V; moreover, S + V.
$17.$ Most people book tickets long in advance but they cannot return home for Tet. (otherwise)

$→$ Most people book tickets long in advance; otherwise, they cannot return home for Tet. 

S + V; otherwise, S + V.
$18.$ A pair of cows in the Cow Racing Festival go outside the line. They cannot continue the race. (If)

$→$ If a pair of cows in Cow Racing Festival goes outside the line, the cannot continue the race.

Tạm dịch : Nếu đôi bò trong Lễ hội đua bò đi ra ngoài vạch thì không thể tiếp tục cuộc đua.
$19.$ The buffalo-fighting Festival sounds frightening but many people come to enjoy it. (Although)

$→$ Although the buffalo-fighting Festival sounds frightening, many people come to enjoy it.

Although S + V, S + V.
$20.$ The dragon boats at Ghe Ngo are racing and the crowds encourage them with drums and gongs. (While)

$→$ While the dragon boats at Ghe Ngo are racing, the crowds encourage them with drums and gongs.

While S + be + V_ing, S + V.

$#Mei UwU$