Most birds find it safe to sleep in the trees, but ________they have eggs or young chicks, they don’t use a nest.
| A．why | B．how | C．unless | D．where |
The growth of part time and flexible working patterns, and of trainingand retraining schemes, _____ more women to take advantage of employment opportunities.
| A．have allowed | B．allow | C．allowing | D．allows |
Sound travels in the same way as light _____.
| A．travel | B．has done | C．traveled | D．does |
The chairman told the speaker that she _____ to speak a little louder so as to make herself _____.
| A．was expected; heard | B．had expected; hear |
| C．had hoped; hear | D．was hoped; heard |
Above it _____ a famous painting.
| A．hanged | B．hung | C．is hung | D．hanging |
I have waited for her since _____.
| A．two hours ago | B．two hours before |
| C．two hours’ time | D．two hours |