Can you tell me _______ I should wear for the party tonight—A blue dress, I think. It’s suitable for a party.

He often ______ basketball, but seldom ______ volleyball.

Can I read some books in the library，Mr.Liu—No，You can’t read ________ you show me your card.That’s the rule of the library.

He wasn’t looking forward to the time ______ he had to give evidence to the court.

She devoted herself _____to her research and it earned her a good reputation in her field [ ]