–Should I keep what we talked about just now secret from Sofia? --She is our close friend, and deserves ____ the truth.

 The girl was dressed in her best clothes. She wanted to make herself _____________ at the party.

 Father ____ , I turned on the computer.

_______ such heavy pollution already, it may now be too late to clean up the river. 

_____ into a top university, we students must show a strong ability in spoken and written English.