In China, the needle treatment dates __ ancient times.
| A．from | B．back to | C．back from | D．both A and B |
You can go out, _________you promise to be back before 11 o'clock.
| A．as far as | B．so far as | C．when | D．as long as |
______, we’ll go camping.
| A．weather permits | B．If weather will permit |
| C．weather permitting | D．weather permitted |
It is in the west of China _____ there is no doubt _____it is going to rain tomorrow.
| A．where; whether | B．that; that |
| C．that; whether | D．where; that |
Please tell me how the accident_____. I am still in the dark.
| A．came by | B．came out |
| C．came to | D．came about |
________ with the size of the whole earth, the biggest ocean does not seem big at all.
| A．Compare | B．When comparing |
| C．Comparing | D．When compared |