You can improve your English _____ practicing more.
Either you or he ________ the classroom every morning.
I have waited for the bus for twenty minutes.(对画线部分提问)________ ________ have you waited for the bus?
—When did the terrible earthquake happen in Ya’an Sichuan?—It happened ________ 8:02 ________ the morning of April 20th,2013.
I usually get up ________ six thirty ________ the morning.A.in;onB.on;inC.at;in
________ do you usually go to bed?