In communication, a smile is usually __________ strong sign of a friendly and _______ open attitude.
| A．the; / | B．a; an | C．a; / | D．the; an |
The more you practise ______ English, the better your _____ English will be.
| A．to speak, speaking | B．speaking, spoken | C．spoken, spoken | D．spoken, speaking |
Anna is often heard ______songs in her room.
| A．sung | B．singing | C．sing | D．to sing |
I went ______a balloon but I didn’t see anyone _____ balloons.
| A．to buy, to sell | B．to buy, selling | C．buying, selling | D．buying, to sell |
This soup is cold; it needs _____.
| A．to heat | B．to be heated | C．being hot | D．heated |
She sat at the desk and set about _____ a letter to her friend.
| A．to write | B．writing | C．write | D．written |