说明理由
1.our city has changed greatly in the last three years
our city is quite______ ______ ______ it was threeyears ago
2.look at those big black clouds.it ___ rain .ler's hurry
a.must b.will c.would d.is going to
3.peter had to leave at once.____ without saying goodbye to his classmates
a.so did he b.so he did c.so had he