---Can I smoke here?
---Sorry. We don’t allow _______ here.
| A．people smoking | B．people smoke |
| C．to smoke | D．smoking |
It rained heavily in the south，_______ serious flooding in several provinces.
| A．caused | B．having caused | C．causing | D．to cause |
Mrs. White showed her students some old maps ______ from the library.
| A．to borrow | B．to be borrowed | C．borrowed | D．borrowing |
Mark ______ have hurried. After driving at top speed, he arrived half an hour early.
| A．needn’t | B．wouldn’t | C．mustn’t | D．couldn’t |
People have always been ______ about exactly how life on earth began.
| A．curious | B．excited | C．anxious | D．careful |
As a child , Jack studied in a v
illage school , _____ is named after his grandfather.
| A．which | B．where | C．what | D．that |