The flight to Guangzhou had to be________because of the heavy snow.

30The subway __________in our city, and I’m sure there will be fewer traffic jams in the future

5、E-mail, as well as telephone, ______ an important part in daily communication.

all, I went to the US as an exchange student. I’ll never forget my homestay there ______ I became a real DIY enthusiast.

By law,when one makes a large purchase, he should have _____ opportunity to change his mind.