一、用所给单词的适当形式填空 1. We shouldn’t_______ (argue) with our parents. 2. You shouldn’t____ (use) the phone in the classroom. 3.—could I use your dictionary?—well, you___.A. can B. could C. should D. might 4.you’d better___(go) to school by bike. 5.How about_________(go) hiking this afternoon?