Theory is based on practice and ________ serves practice.
| A．in turn | B．by and by | C．by chance | D．in this case |
I often hear this English song _________on the radio.
| A．sing | B．singing | C．to sing | D．sung |
Many tents as well as food, water and medicine _________ to Yushu.
| A．have sent | B．have been sent | C．has sent | D．has been sent |
______ in the street, I had my mobile phone stolen yesterday..
| A．Walking | B．Walked | C．Walk | D．To walk |
I have lost my dictionary. I have to buy a new _______.
| A．it | B．that | C．one | D．this |
--- Parker, you can speak Chinese, ________you?
---Yes, but only a little
| A．won’t | B．mustn’t | C．needn’t | D．can’t |