1.___Did__the boys___use__(use) the computer?
2.Mr Black goes to work by __train___(train) every day.
3.我经常在家上网.
I often __surf___ __online___on Sunday at home.
4.Please complete the sentences ___with___(填介词) these words.
5.The two girls like singing Ehglish songs.(改为一般疑问句,并作否定回答)
__Do___ the girls __like___ singing Ehglish songs?
No,___they__ __don't___.