41It is rather difficult to make friends with him, but once________, his friendship is more valuable than any other’s.
A.gained
B.to be gained
C.gaining
D.being gained
开始考试练习点击查看答案42The students entered the classroom,________ down to have their French lesson.
A.sat
B.to sit
C.sitting
D.being sat
开始考试练习点击查看答案43He persuades me________ part in the English competition.
A.in taking
B.to taking
C.take
D.into taking
开始考试练习点击查看答案44Vegetables________ , the next thing is to cut the carrot into pieces.
A.being washed
B.washed
C.to be washed
D.washing
开始考试练习点击查看答案45I have as much fun planting flowers as I now do________ with students.
A.working
B.work
C.to work
D.worked
开始考试练习点击查看答案46I have to leave now, so I can’t help________the house.
A.cleaning
B.clean
C.cleaned
D.having cleaned
开始考试练习点击查看答案47________ over a week ago, the goods haven’t arrived so far.
A.Ordering
B.To order
C.Having ordered
D.Ordered
开始考试练习点击查看答案48The headmaster,________early retirement last year because of his bad health, was invited to the opening ceremony of the art festival.
A.was forced into
B.having forced to
C.forced into
D.who was forced to
开始考试练习点击查看答案49At the crossing there is an arrow________ the direction to the farm.
A.indicating
B.to indicate
C.indicated
D.indicates
开始考试练习点击查看答案50China has introduced a national two-child policy________ the challenge of aging population.
A.to meet
B.meet
C.met
D.meets
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