ms too tired today, and I wonder _________ he got a good sleep last night.

I was giving a talk to a large group of people, the same talk I _____ half a dozen other groups before.[ ]

The shy girl felt ______ and uncomfortable when she could not answer her teacher’s questions.

Have you got any idea for the summer vacation?—I don’t mind where we go ________ there’s sun，sea and beach

They arrive at the bus stop on time.