Choose the correct answer to the following questions.
Câu 1: His letter is full of mistakes. He _____________ the mistakes carefully before sending it.
A. must have checked
B. should have checked
C. could have checked
D. can have checked
Câu 2: “I bought two bottles of milk.” - “You _____________ have bought milk; we have heaps of it in the house.”
A. couldn’t
B. needn’t
C. mustn’t
D. hadn’t
Câu 3: “I left my bike here and now it’s gone.” - “Someone _____________ borrowed it.”
A. must have
B. should have
C. couldn’t have
D. needn’t have
Câu 4: “Do you remember reading about it in the newspaper?”- “No, I _____________ abroad at the time.”
A. must have been
B. must be
C. should be
D. should have been
Câu 5: “The door was open.” - “It _____________ been open. I had locked it myself and the key was in my pocket.”
A. mustn’t have
B. must have
C. can’t have
D. shouldn’t have
A.
B.
C.
D.