正在下载：Unit3-4单元综合测试

I.选择题(20分) 1.   We have to stay at home _______school nights. A.on  B.at  C.in  D.over 2.   Could you please help me ______my math?  It ‘s too difficult for me.   A. to  B.for  C.with  D.on 3.   We can learn ______from volunteering. A.lots of  B....