22.______ in natural gas and oil, so this area is worth developing.
| A．Being rich | B．It is rich | C．It being rich | D．To be rich |
Many students don't want themselves to _______ doing _______ homework.
| A．keep busy; too much | B．be kept busying; much too |
| C．be kept busy; too much | D．being kept busy; too much |
—English has a large vocabulary, _______?
—Yes. Know more words and expressions and you will find _______ easier to read and communicate.
| A．hasn't it; it | B．doesn't it; that | C．has it; what | D．does; one |
Hong Zhanhui never gives up trying. It is the love and responsibility _______ has driven him to go through hardships and survive in life.
| A．what | B．which | C．who | D．that |
Several witnesses gave accounts of what they had seen. It took many hours to _______ the court of the driver's guilt.
| A．prove | B．convince | C．persuade | D．demonstrate |
We invited her to join us in the discussion, but she would not _______.
| A．take action | B．take notice | C．take part | D．take notes |