用括号内所给动词的适当形式填空。 1.We ________(watch) the boys________(play) basketball on the playground when something strange happened. 2.I don’t know what _________ (happen)tohim just now. 3.Computers are useful to us. But somestudents only use them ________ (play) games. 4.–--Would you mind ________(take) photoswith me? --- Of course not. When I miss you, I canhave a look. 5.You may go to play football as soon asyour homework ________(finish). 6.Middle school students ________(tell) notto smoke.