If our product ____ unsatisfactory within 7 days in any way, you can take it back.
| A．shows | B．proves | C．makes | D．performs |
Though ______ after a day’s hard work, he still told his children stories until they fell asleep.
| A．tire | B．to be tired |
| C．tired | D．tiring |
I ______ in Tibet for three years; if you go there for your holiday this summer, I’ll have my friends take care of you.
| A．worked | B．had worked |
| C．work | D．was working |
The training equips the students with ______ full understanding of first aid, which can make ______ real difference.
| A．不填; the | B．a; a |
| C．不填; 不填 | D．the; 不填 |
--- Does Mike always go on holiday together with his sister?
---- _________. If he has his holiday the same as she, then they go together.
| A．It’s his guess | B．It’s up to you |
| C．That’s settled | D．That depends |
Children like to _____ what they have but others don’t have, which makes them proud.
| A．cheer up | B．give up |
| C．show off | D．put off |