Hardly ______ off the bus when ______an old friend who he hadn’t seen for years.

You’ve been here _____ a month. Don’t you miss your parents—Yes, I plan to come back home _____ a month.

Try your best to learn English , ___ difficult it is , you shouldn’t give it up.

The girl ________ nothing ________ common ________ her sister.[ ]

Vacation is good for us. Though we can’t our troubles in life for ever, we can leave them behind when we are on vacation.[ ]