The computer __________ so often if __________ it.
A. had not crashed / Larry tested
B. might not have crashed / had tested
C. might not have crashed / have tested
D. crashed not / had tested
Chọn đáp án B
If you ____________ down the volume of your stereo, the neighbours would not have complained.
If we __________ the window yesterday, it __________ so cold in here.
If they __________ a new tent, they__________ wet during the night.
If the men __________ the batteries, they 999 enough power for their laptops.