It is very kind ____ you to help me with these maths problems because it is very difficult ____ me to work them out.
| A．of; for | B．of; of |
| C．for; of | D．for; for |
We asked six students what ______ yesterday.
| A．do they do | B．did they do |
| C．they did | D．they do |
He often has some _______ and _______ for breakfast.
| A．eggs; bread | B．eggs; breads | C．egg; bread | D．egg; breads |
We didn’t go out because it ________ heavily last night.
| A．rains | B．rained | C．rainy | D．raining |
He _____ a song last night.
| A．writes | B．writing | C．wrote | D．writed |
There is a post office _____ the street corner .
| A．on | B．in | C．behind | D．across |