One of the students hasn’t prepared ____ lessons very well.
| A．his | B．one’s | C．ones | D．their |
______almost one hundred jin, the stone was moved by him alone.
| A．Weighed | B．Weighing | C．It weighed | D．To weigh |
The boy the first prize, but he was so careless as to make a foolish mistake.
| A．must have gained | B．need have gained |
| C．could have gained | D．shall have gained |
My wife sometimes _____ something she has long been looking for. That’s why she enjoys window shopping.
| A．looks up | B．looks for | C．picks up | D．picks out |
High-speed trains which travel through my home town ______ up to 250 km per hour make it a small world.
| A．with | B．against | C．at | D．over |
The necklace the woman bought is , because it is made of glass.
| A．priceless | B．worthwhile | C．valuable | D．worthless |