`1.` These plants can (grow) ____grow_______ for animals’ food.

`-` Can+ V-inf.
`2.` He used to (take) ____take_______to school by his grandmother.

`-` used to+ V-inf: đã từng làm việc gì đó trong QK.
`3.` He (wish) ____wishes_______he (can buy) ___could buy________  a new house.

`-` Cấu trúc câu Wish ở tương lai: S+ wish(es)+ (that)+ S+ would/could+ V-inf.

`4.` Lan (have) _____had______dinner when her friend (call) _____called______.

`-` Sự phối thì when: QKĐ when QKĐ.
`5.` My sister (not want) _____didn't want______ (watch) ___to watch________this film because she (watch) ___has watched________it twice.

`-` twice `to` HTHT.

`-` Xảy ra trong QK và lan ra HT.
`6.` He (ask) ____asked_______me where I (will go) ____would go_______the next day.

`-` S+ asked+ O2+ (wh?)+ S+ V(lùi thì).

`-` the next day `to` TL.

`-` will `to` would.