Don’t promise anything ________ you are one hundred percent sure.
| A．if | B．after | C．when | D．unless |
—Your sweater looks nice, is it made of wool?
—Yes, and it’s made ______ Shanghai.
| A．by | B．in | C．for | D．from |
—Mom, shall we have supper now?
—Oh, we won’t have supper ______ your dad comes back.
| A．until | B．since | C．while | D．after |
—Did you get there by ______ bike?
—No, I took ______ taxi.
| A．a; a | B．不填; a | C．the; the | D．a; the |
Sheworesomethinclothesinsuchacoldday,_______Ifoundquitestrange.
| A．which | B．that | C．what | D．when |
Thebook,afewpages_______arelost,isofnotmuchuse.
| A．which | B．ofwhich | C．whose | D．ofthat |