The mark of PE will be increased to 60 points in Maanshan in order to ______ students’ physical quality（身体素质）.
A.produce B.make C.achieve D.improve
If there are any letters for me, ______ you send them on to this address?
A.must B.need C.can D.should
Thanks to our teachers. _____________ their help, we couldn’t make such great progress.
A.For B.Without C.With D.About
Dear Rita, long time no see! Do you know ______ I want to see you again?
A.how long B.how much C.how many D.how often
— Hello, Peter. Could I ask you a few questions?
— ______Feel free.
A.Nothing serious. B.Don’t mention it! C.That’s right. D.Of course!
When an earthquake happens, I think the most important safety ____ is to keep calm.
A.rule B.doubt C.condition D.problem
