Linda Smith has been very helpful to me in the past and I hope she______so in the future.
A.is
B.would be
C.will be
D.be
第1题
We sincerely trust, therefore, that the credit______ you by the time you read this letter.
A.reaches safely
B.has reached safely
C.would reach safely
D.will have safely reached
请帮忙给出正确答案和分析,谢谢!
第2题
Several centuries ago people did not believe that the earth______round the sun.
A.revolved
B.had revolved
C.revolves
D.has been revolving
请帮忙给出正确答案和分析,谢谢!
第3题
In recent years, a number of communication satellites ______ into orbit about the earth.
A.have been put
B.has been put
C.are already put
D.have been putting
请帮忙给出正确答案和分析,谢谢!
第4题
Attention should______practice in production in addition to theoretical study.
A.be also paid
B.have to also paid
C.be also paid to
D.have to also pay to
请帮忙给出正确答案和分析,谢谢!
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