Do you know that Yuan Longping is known as ______ father of hybrid rice (杂交水稻)?
| A．/ | B．the | C．a | D．an |
—What made her unhappy?
—_____.
| A．Because she lost her wallet | B．she lost her wallet |
| C．Losing her wallet | D．To lose her wallet |
It was very dark，____Jane seemed to know which way to take at the crossroads.
| A．or | B．and | C．but | D．as |
Noise is unpleasant, ________ when you are trying to sleep.
| A．seriously | B．specially |
| C．especially | D．naturally |
It's quite warm here; we ________ turn the heating on yet.
| A．needn’t | B．mustn't | C．couldn’t | D．wouldn't |
Sarah made ______ to the airport just in time to catch her plane this morning.
| A．herself | B．this | C．that | D．it |