Billy was the youngest boy on the hike, but he______with the others.
| A．kept up | B．turned up | C．caught up | D．drew up |
Not until he retired from teaching three years ago having a holiday abroad.
| A． he had considered | B． had he considered |
| C． he considered | D． did he consider |
I feel so excited! At this time tomorrow morning I to Shanghai.
| A． will be flying | B． will fly |
| C． have been flying | D． have flown |
Leave your key with your neighbor you lock yourself out one day.
| A． as long as | B． even though | C． in case | D． as if |
This machine is very easy. Anybody can learn to use it in a few minutes.
| A． | operating | B． | to be operating | C． | operated | D． | to operate |
If you're buying today's paper from the stand, could you getfor me?
| A． | one | B． | such | C． | this | D． | that |