___ there are certainly times when giving up trying is the right thing to do, in most cases all needed is commitment and communication.

I will do my best in the talent show ______ I may fail.— Wonderful! I will support you all the time.

Mr. Wang _______drive to work, but now he _______there by bike to keep healthy.

Where is the post office?—It’s just over there, at the end of the street. You not miss it.

We welcome good employees, ______ their ageor sex.