No one could _________ the failure of the experiment as everything went smoothly at first.
| A．give an account for | B．account for | C．take account of | D．take into account |
It was__ he said__ disappointed me.
| A．that；what | B．what；that | C．what；what | D．that；that |
---Miss Li, where did you visit last week?
--- I visited a big company __________ ships are made.
| A．that | B．which | C．where | D．whose |
They discovered the cause of the fire accidentally. They discovered it _______.
| A．fortunately | B．by chance | C．all of a sudden | D．on purpose |
How ________ you say that you really understand the whole story if you have covered only a part of the article?
| A．can | B．must |
| C．need | D．may |
We hope to go to the beach tomorrow, but we won’t go ____ it’s raining.
| A．if | B．when | C．though | D．because |