Hi,I didn’t see you at the party in the company yesterday evening.—Oh, all my family my son’s birthday at home.

I’m quite sure that it is___ impossible for me to fulfill the task in only two days without anyone to help me[ ]

The speech given by that old professor seemed ________，which made the audience very bored.

The math problem is too difficult for us to _______.

Tom eagerly findished up ________ was left of the chicken pie