1a saw

b went

c took

d spoke

e received

f bought

g was

h returned

i taught

j were

2a Yes I did/ No I didn't

b Yes she did/No she didn't

c Yes he did/No he didn't

d Yes she did/No she didn't

e Yes they did/No they didn't

f No I didn't/Yes I did

g Yes he did/No he didn't

h No he didn't/Yes he did

i Yes she did/No she didn't

j Yes they did/No they didn't

3a Liz remembered her trip to Nha Trang

b Hoa bought a lot of things for her birthday party

c They saw various kind of fishs

d Liz gave Ba some new American stamps

e They thought the vacation to Nha Trang was wonderful

f We rented a car to go around the city