Question

努力努

想請問一下這一題
為什麼不能選D

CR
(A) are being
7. A typhoon destroyed the
A) were wait
(C) are to be
4) is being
idge to the village; all the residents could
(B) were waiting
(C) was wait
do)
(D) was waiting
thing that she does every day
for help.
the house tidy

Answer 1

qn

all/the only thing 某人可以/應該/..做 be (to) V
be 後面接不定詞，但 to 可以省略