I sooner but I didn’t know that they were waiting for me.

a great forany man to be able to talk or hear, neither ignorantly nor ridiculously, uponany subject

Would you like _____ with me tomorrow–Yes,I’d like to.

Many students suggested that the school reading room _____open during the vacation. [ ]

___ the problem of land erosiongetting more serious, the government is searching for a way to deal with it.