31. Attention must be paid to ______ science and technology..
| A．develop | B．developing | C．development | D．Developed |
The bank has _________ some property on which to constructed.
| A．paid | B．picked up | C．purchased | D．Invested |
The island in the middle of the lake _____________ the beauty of the lake.
| A．adds up to | B．adds to | C．adds up | D．adds |
It is important for us to employ a word or phrase according to the ________ in language studies.
| A．situation | B．expression | C．comprehension | D．Translation |
The boy will make a lot of trouble when ____________ alone.
| A．leaving | B．leave | C．left | D．being left |
It’s true that everyone loves a mystery, ___________ when mixes history with fiction. That’s why “ The Da Vinci Code ” is so popular.
| A． especially | B．equally | C．totally | D．Finally |