-- When do you need to pay the balance?
-- ______ December 31.
| A．In | B．By | C．During | D．Within |
Instead of ___________the dictionary, I always try to guess the meanings of those new words in the passage.
| A．accounting for | B．referring to |
| C．bringing up | D．dealing with |
Most of the evidence was destroyed in the fire.__________, it would be almost impossible to prove Jim guilty.
| A．Anyhow | B．However |
| C．Besides | D．Thus |
My father read through my composition and _________quite a few spelling mistakes in it.
| A．sought | B．issued |
| C．spotted | D．consulted |
It was about 600 years ago _______the first clock with a face and an hour hand was made.
| A．until | B．when |
| C．before | D．that |
If you_______ smoke, please go outside.
| A．can | B．should |
| C．must | D．may |