----How about the pollution in the countryside?
--- Luckily, it's not as serious as _______ in the big cities.
| A．that | B．it | C．one | D．Those |
— Where are your brothers?
— ________.
| A．He is at school | B．He is in his room | C．Yes，they are | D．I don’t know |
— Is this your watch?
— ________.
| A．Yes, it isn’t | B．No, it isn’t | C．Yes, this is | D．No, it is |
— What’s this in English?
— ________.
| A．It’s bag | B．This is bag | C．It’s a bag | D．This is an bag |
Please call me ________ 9543526.
| A．at | B．of | C．in | D．on |
It is ________ eraser.
| A．a | B．/ | C．an | D．two |