David’s mother insisted that he ____before ten every night.
A. must go to bed
B. goes to bed
C. go to bed
D. has gone to bed
第1题:
Mother: Walter! Don't make any sound when you have your soup.
Walter: Yes, Mum.
Father: ________. He's only a child.
A、I completely agree with you
B、Don't be so hard on him
C、The noise is very disturbing
D、Don't be very cruel to him
第2题:
He’s watching TV? He’s ________ to be cleaning his room.
A) known B) supposed C) regarded D) considered
第3题:
14. —Is this your bike,David?
—No, It’s not________.It's Helen’s.
A. his
B. yours
C. mine
D. hers
第4题:
Tony: Eric has decided to quit drinking.
David: Again? ______
A、It's a difficult decision to make.
B、Alcohol-addiction is dangerous.
C、I wonder how long it will last this time.
D、He's an alcohol addict.
第5题:
A. Every 5 minutes
B. Every 90 seconds
C. Every 60 seconds
D. Every 30 seconds
第6题:
控制器的传递函数,扰动通道的传递函数和广义控制通道的传递函数分别为()
A.GC(s)、Gf(s)、Go(s)
B.Go(s)、Gf(s)、GC(s)
C.GC(s)、Go(s)、Gf(s)
D.GC(s)、Gf(s)