—Jack studies very hard before the final exam.
—-Yeah! I think he will _________get good grades.
A.loudly B.clearly C.lively D.certainly
—The sky looks terrible!
—It will be worse __________we take action to protect the environment.
A.unless B.if C.when D.after
—How many people will come to the party this evening?
—About 15 people _____________.
A.were invited B.invited C.will invite D.invite
—____________interesting science class we had today!
—Yes! Now I know more about how the earth and the sun moves!
A.How B.What C.What a D.What an
—How long has Mr. Brown _________________?
—Since two years ago.
A.came to Jinan B.left the U. S. C.started his job D.stayed here
—It's popular to make friends on the Internet.
—Yes, but sometimes we should _________ invitations from the net friends.
A.pull down B.write down C.cut down D.turn down
