$\text{1.}$ has just finished
$\text{→}$ just chia HTHT
$\text{2.}$ hasn't done
$\text{→}$ yet chia HTHT
$\text{3.}$ have you studied - Did you study
$\text{→}$ Câu trả lời có for nên câu hỏi chia HTHT
$\text{4.}$ have never eaten
$\text{→}$ before, never chia HTHT
$\text{5.}$ have helped
$\text{→}$ This is the first time chia HTHT
$\text{6.}$ saw - have seen
$\text{→}$ last week chia QKD, so far chia HTHT
$\text{7.}$ didn't go - went
$\text{8.}$ was - played
$\text{9.}$ built - have just redecorated
$\text{→}$ ago chia QKD
$\text{→}$ just chia HTHT
$\text{10.}$ have known
$\text{→}$ for chia HTHT
$\text{11.}$ didn't see - told
$\text{12.}$ bought - did you pay - paid
$\text{13.}$ did you find - found - didn't you leave
