1. We had to call an ambulance because of a ______ person.
A. injured( vì trước person là danh từ nên dùng tính từ )
B. injure
C. injuring
D. injury
2. It's _______ to believe that he passed the exam.
A. hard
B. hardly
C. difficultly
D. difficult( cấu trúc It's + adj + to V)
3. I didn't hear you ______in. You must have been very quiet.
A. came
B. come( hear + O + V)
C. to come
D. had come
4.Do you know how ................fire without using the matches?
A. make
B. to make( how + to +V)
C. making
D. makes
5.Lien wanted .........................a letter to her friend in France.
A. sending
B. sends
C. to send( want + to + V)
D. sent