—Can I pay the bill by check?
—Sorry, sir．But it is the management rules of our hotel that payment _____ be made in cash．
| A．shall | B．should | C．must | D．can |
—Was it 11 o'clock ________ your father came back last night?
—Yes, he is always coming back so late.
| A．that | B．while |
| C．when | D．until |
—I don't mind how you do it ______ you finish the painting on time.
—OK, I see.
| A．as well as | B．as far as |
| C．as long as | D．as fast as |
You seem to have a readymade answer ________ I ask you a question.
| A．whenever | B．whatever |
| C．whichever | D．whoever |
Steve was busy clearing the cups and dishes from the table ________ others were playing.
| A．until | B．if |
| C．since | D．while |
________ it is, the boy never seems to be able to finish it off.
| A．However interesting a book |
| B．Whatever interesting a book |
| C．How interesting a book |
| D．What an interesting book |