Without proper lessons, you could ___ a lot of bad habits when playing the piano.
| A．keep up | B．pick up | C．draw up | D．catch up |
As teenagers, it is not until we are able to face difficulties bravely we are mature enough.
| A．which | B．when | C．that | D．whether |
a large salary rise already, Sarah is thinking of buying a new apartment.
| A．Receiving | B．Having received |
| C．received | D．To receive |
Printing passengers’ names and ID numbers on tickets will make harder to protect their private information.
| A．one | B．those | C．it | D．them |
The boys were about to go out to play football suddenly it began to rain.
| A．when | B．as | C．while | D．then |
I travelled in Mountain Tai, I was deeply impressed with its beautiful scenery.
| A．For the first time | B．At first |
| C．It was the first time | D．The first time |