My iPad doesn’t work. I can’t ____the reason why it is broken.
| A．find | B．look for |
| C．look up | D．find out |
Don’t be late again. Please try your best to be here __________.
| A．in time | B．on time | C．at times | D．at all times |
The food on the plate bad. Throw it away.
| A．is smelt terrible | B．is smelt terribly | C．smells terribly | D．smells terrible |
--- When will you return to your hometown? ---__________.
| A．Not until the end of this month | B．Until next week |
| C．A few days ago | D．A few weeks before |
Only ________ of the students come to school by bus.
| A．three fifth | B．third fifths | C．three fifths | D．third fifth |
It is selfless ________ the doctor to devote all the time he had ________ for the patients.
| A．for; to care | B．of; to care | C．for; to caring | D．of; to caring |