$\text{41.}$ C

$\text{42.}$ D 

$\text{43.}$ D 

$\text{44.}$ C

$\text{45.}$ C 

$\text{-> The last time + S+ Ved/cột 2 + was + time}$

$\text{-> It's + time + since + S + last + Ved/cột 2 }$

$\text{-> S+started/began + to V/V-ing + when/in/on/... }$

$\text{-> S+ has/have + Vpp + since/for + time}$

$\text{-> How long + has/have + S+ Vpp + O ? }$

$\text{-> When + did + S+ V-inf ? }$

$\text{-> This is the first time + S+ has/have + Vpp}$

$\text{-> S+has/have + never + Vpp + .... + before }$

$\text{41.}$C  

-> S + has/have + not + Vpp + O 

-> The last time + S+ Ved/colums 2 + .... + was + time ( trong quá khứ ) 

$\text{42.}$D  

-> It is + time ( trong quá khứ ) + since + S + last + Ved/colums 2 + time ( trong quá khứ ) 

$\text{43.}$D 

-> When + did + S + V nguyên mẫu + O ? 

-> How long + has/have + S + Vpp + for/since + time ( trong quá khứ ) ? 

$\text{44.}$C 

-> This is the first time + S+ has/have + Vpp + O 

-> S + has/have + (ever/never ) + Vpp + O 

$\text{45.}$D 

-> S + started + V-ing/to V + .... + time ( trong quá khứ ) 

-> S + has/have + Vpp + for/since + time ( trong quá khứ ) 

$\textit{@Chaehyn}$