He’s already back to the USA, __________ —_________.He is on a business trip in Suzhou.

– Good morning Can I help you?- I’d like to have this package _____, madam[ ]

The traffic was so heavy, you know. —Does that ________the serious accident?

Tom is weak in physics. He always feels _______ beforehe takes a physics test.

It’s surprising that your brother __________ some knowledge of the computer just by watching others working on it.