24. Second engineer told me that you are __________ with the No.1 HFO Purifier.
(A) having problems
(B) have problems
(C) has problems
(D) had problems

答案：登入後查看
統計： A(666), B(279), C(63), D(108), E(0) #2105335

詳解 (共 1 筆)

#4574122
be動詞後要接動名詞be +Ving 
(共 21 字，隱藏中）
前往觀看
12
0