关键语法
（1）What________you________(do)when the rainstorm came？
（2）He________(play)basketball yesterday at the time of the rainstorm．
（3）I was in the kitchen________(help)my mom．
（4）When I called him，he________(have)a shower．
（5）I needed________(help)with my homework．
（6）The rain began________(beat)________(heavy)．
（7）They tried________(play)a card game．
（8）It was hard________(have)fun with a serious storm________(happen)outside．
（9）The wind________(die)down at around 3:00 a.m．
（10）What was he doing while Jim________(sleep)？