All the class keep quiet _________ the class begins.
A.until | B.since |
C.as soon as | D.though |
I often go to sleep ________10:00 p.m. ________7:00 a.m..
A.at, at | B.at, and | C.between, and | D.from, to |
—Could you pass me the book?
—______________.
A.OK. Here you are. | B.Let me think. | C.Yes, I could. | D.No. |
Most students hope _______well in their study.
A.doing | B.do | C.to do | D.does |
Half of the books ________easy for the students to read.
A.are | B.is | C.am | D.be |
The cat climbs into the sitting-room _______the open window.
A.through | B.across | C.cross | D.over |