Why has Mr. Green been busy going to the library recently? — _____ ready for the public speech. [ ]

I’d appreciate________ if you would like to teach me how to use the computer.[ ]

Jack，you look tired today.What’s wrong — I was _______busy _______ I didn’t go to bed until midnight yesterday.

The teacher told us _______.

________does your father play table tennis —Twicea week.