– Physics _____ more difficult than Chinese, do you think so?
-- Yes, I think so.
A. is B. are C. has
An accident ________ on Zhongshan Road yesterday afternoon.
| A．has been happened | B．was happened | C．is happened | D．happened |
Jack wanted to read more, so he asked his friend if there was ________ to read.
| A．something easy enough | B．something enough easy |
| C．enough easy something | D．easy enough something |
So far, the moon ________ by man already.
| A．is visited | B．will be visited | C．has been visited | D．was visited |
The work is too hard, so ____ were needed.
| A．another six men | B．six men more | C．more six men | D．men another six |
You must keep your eyes ________.
| A．close | B．closed | C．closing | D．to close |