Có "... last + V-ed/c2.... + time + ago" , chọn

• have/ has + pp ... + for + time

• haven't/ hasn't + pp... + for + time

• had + pp... + for + time

• hadn't + pp... + for + time

Có "The last time + S + V-ed/c2.... + time + ago" , chọn

• have/ has + pp ... + for + time

• haven't/ hasn't + pp... + for + time

• had + pp... + for + time

• hadn't + pp... + for + time

Có "The last time + S + V-ed/c2.... + in + time " , chọn

• have/ has not + pp ... + for + time

• haven't/ hasn't + pp... + since + time

• had + pp... + for + time

• hadn't + pp... + since + time

Có " S + started/ began + to V/ V-ing.... + in + time " , chọn

• have/ has + pp ... + for + time

• haven't/ hasn't + pp... + since + time

• have/has + pp... + since + time

• hadn't + pp... + for + time

Có " S + started/ began + to V/ V-ing.... + time + ago " , chọn

• have/ has + pp/ been + V-ing ... + for + time

• haven't/ hasn't + pp... + since + time

• have/has + pp/ been + V-ing... + since + time

• hadn't + pp... + for + time

MUST có thể thay cho

• obliged

• forbidden

• compulsory

• important

MUSTn't có thể thay cho

• obligatory

• not allowed

• forbidden

• necessary

MUST có thể thay cho

• sure

• required

• uneccessary

• permitted

MAY/MIGHT/CAN có thể thay cho

• likely

• unable

• capable

• maybe

MAY/MIGHT/CAN - not có thể thay cho

• likely

• unable

• incapable

• impossible