This is the first time that your parents have been abroad, ______?
| A．haven’t they | B．hasn’t it | C．aren’t they | D．isn’t it |
We tried to find a table for seven, but they were all ______．
| A．given away | B．kept away | C．taken up | D．used up |
I don’t know who invented _____ iPhone, but I think it is____ useful invention．
| A．the; a | B．the; the | C．an; the | D．an; a |
Mr. Li, who _____ his whole life to education, is retiring next month.
| A．devoted | B．is devoting | C．has devoted | D．had devoted |
________ your dog with me should be a good choice. Trust me and I’ll look after it well.
| A．When you left | B．Leaving | C．If you leave | D．Leave |
Although the medicine can cure you ______ your illness, it has a bad effect ______ you.
| A．for ; in | B．for ; on | C．of ; on | D．of ; at |