Walking does need a bit of practice _____ gravity has changed.
| A．as if | B．in their turn | C．now that | D．as a result of |
_____ the water run while you brush your teeth wastes water.
| A．Don’t let | B．Let | C．Not letting | D．Letting |
The fruit _____fresh in his fruit stand sells well.
| A．looking | B．looked | C．look | D．to be looked |
------Do you mind if I keep pets in this building?
------_____.
| A．You’d better not, actually. | B．Of course not, but it’s not allowed here. |
| C．Great! I love pets. | D．No, you can’t. |
The speaker raised his voice but still couldn’t make himself ______.
| A．hear | B．to hear | C．hearing | D．heard |
The visiting professor gave us some advice, ____ of great help to our English learning.
| A．I think it is | B．I think which is | C．which I think is | D．which I think it is |