The door won’t open if you don’t give it ______ hard push.

Who helped you with your homework— _______ . I did it myself.

I love the internet. I’ve come to know many friends on the net.—________. Few of them would become our real friends.

It rained hard for several days _____, a flood occurred in South China this summer [ ]

Is the museum ______ our school–Yes, so we have to take a bus there.