Yesterday, when I went past the classroom, I _______ someone _______.
| A．hear, singing | B．heard, singing | C．heard, sang | D．hear, sang |
You are sure to fail the exam__________you study hard.
| A．if | B．unless | C．since | D．that |
There ______a number of books in our school library. The number of books________getting larger than last year.
| A．is, is | B．is, are |
| C．are, are | D．are, is |
The play _______ one and a half hours yesterday.
| A．lasted | B．lasted for |
| C．is lasting | D．lasts |
My father encouraged me _______ more cities in China.
| A．visiting | B．to visit |
| C．to visiting | D．visit |
Tiger Watch won ______ award ______ its amazing photography.
| A．a, of | B．an, for |
| C．the, about | D．/, from |