用括号内所给动词的适当形式填空。 小题1:Recently I listened a song ____ Heart Strings.(call) 小题2:The telephone (invent) before the car. 小题3:The workers in the factory is made ______________ (work) 16 hours every day. 小题4:He said he ____________(be) a scientist some day. 小题5:Keep clean please. It is ____________(correct) to litter there. |