用所给动词的适当形式填空 1.He'll do his best ______ (learn)a foreign language well. 2.She isn't old enough ______ (join)the army. 3.It's time for us ______ (go)to school. 4.I'm sorry ______ (hear)that. 5.The runner fell and hurt his left leg but he quickly got up and went on ______ (run). 6.How about ______ (skate)this afternoon
7.What about the ______ (sleep)pills I gave you
. 8.Are you good at ______ (swim)
9.We are all interested in ______ (play)games. 10.He gave Mrs Beet mouth-to-mouth ______ (breathe). 11.He spent 30 yuan ______ (buy)that dictionary . 12.It took me half an hour ______ (finish)that work. 13.It's best ______ (wear)warm clothes in winter. 14.Let's do the ______ (shop),shall we
15.Are you enjoying ______ (live)on the fifth floor
16.It's very i