When the policeman came to the scene, the driver of the car _________
A.have left
B.leaves
C.had left
D.was left
vì cấu trúc: when+ QKĐ, QKHT.
18The teacher said we ___a week off on the International Labor Day the next week.
A.would have
B.have
C.didn’t have
D.will have
Thì TLĐ trong câu gián tiếp: will `to` would.
19 The most common way of attracting someone’s attention is by ________hands.
A.to waving
B.to wave
C.wave
D.waving
Dịch: Cách phổ biến nhất để thu hút sự chú ý của ai đó là vẫy tay.