23、______, we’ll go to swim.

A．Time permits　 B．If time permit　 C．Time permitting　 D．Time permited

22、During the break he began to sing a song and we all ______.

A．took part in　　 B．join in　　 C．joined　　 D．together

21、Lei Feng ______ us a good example and we should ______ it.

A．follow; set　　 B．gave; learn from　　 C．sets; follow　　 D．set; follow

20、In the reading-room there are many tables and chairs, ______ we sat at times to read.

A．at that　　 B．where　　 C．which　　 D．and

19、the school ____ a 20-classroom building which was put up last year near our village.

A．where　　 B．in which　　 C．with　　 D．has

18、After the war, a new school building was put up ______ there had once been a theatre

A．When　　 B．which　　 C．where　　 D．that

17、______ the note in his hand, the fellow stood there dumbfounded.

A．Held　　 B．Having held　　 C．Holding　　 D．Hold

16、He admitted ______my English dictionary.

A．to have stolen　　 B．to steal　　 C．having stolen　　 D．having been stolen

15、He demanded that the bus company ______ its unfair practice

A．changed　　 B．should change　　 C．changes　　 D．changing

14、Mixed race marriages were forbidden ______.

A．by the law　　 B．by law　　 C．by laws　　 D．by a law