We should not let our grandparents who are too old and weak ________ alone.
A.live | B.living. | C.to live | D.lived |
He ______ his conclusions on the facts that are known to everyone.
A.bases | B.puts | C.gets | D.goes |
—How many times have you been to China?
—In fact, it is the first time I __________ here.
A.was | B.am | C.had been | D.have been |
His father told me that he __________ for the United States three days __________.
A.has left; ago | B.had left; ago | C.left; ago | D.had left; before |
Please __________ the numbers and I’m sure they will __________ more than 1, 000.
A. add up; add to B. add up; add up
C. add up; add up to D. add to; add up
Being afraid of making mistakes, the little boy __________ answer his teacher’s question.
A.does dare | B.doesn’t dare | C.daren’t to | D.not dare to |