It be the vocabulary that caused you the problem in the exercise because you know a lot of words.
| A．may | B．couldn’t | C．should | D．needn’t |
People still lack knowledge about what can be recycled and what cannot, especially when it comes to __________ kitchen garbage.
【选项 】
| A．sort |
| B．sorting |
| C．sorted |
| D．having sorted |
The first decade in the 21st century __________ the rapid rise of China as a world economic power.
| A．witness |
| B．has witnessed |
| C．will witness |
| D．have witnessed |
__________ the city centre, we saw a stone statue of about 10 metres in height.
| A．Approaching |
| B．Approached |
| C．To approach |
| D．To be approached |
Tom was about to close the window __________ his attention was caught by a bird.
| A．when |
| B．if |
| C．and |
| D．till |
After the earthquake, the first thing the local government did was to provide __________ for the homeless families.
| A．accommodation |
| B．occupation |
| C．equipment |
| D．furniture |