Measles ........... proven to be caused by a kind of virus.
A. is B. are C. have D. has
Đáp án A
Measles là tên một loại bệnh nên động từ chia ở dạng số ít.
Measles là danh từ chỉ vật nên không thể thực hiện được hành động "prove", do đó câu trên chia ở thể bị động
Cattle ........... raised mostly in the south of the United States.
Billiards ........... considered to be an artistic sport.
My mother told me she _______ very tired since she came back from a visit to our grandparents.
A. was
B. had been
C. is
D. has been
The director _______ for the meeting by the time I got to his office.
A. left
B. had left
C. leaves
D. will leave
By the end of lasomething summer, the farmers _______ all the crop.
A. harve some thinged
B. had harve some thinged
C. harvesomething
D. are harve some thinged
When we went back to the booksomethingore, the bookseller _______ the book we wanted.
A. sold
B. had sold
C. sells
D. has sold
It is possible that she will come to our party tonight. She______ come here tonight.
A. need
B. may
C. should
D. will
You have been reading for four hours. This book ___ be very interesting.
A. can B. might C. must D. should
My mother permitted me to go out at night. She said, "You_____ go out tonight".
A. may
B. have to
C. must
D. ought to
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