Leave your key with your neighbor ________ you lock yourself out one day.
| A．as long as | B．even though |
| C．in case | D．as if |
—Excuse me, I’m looking for my umbrella.
—Oh, sorry. I took ________by mistake.
| A．yours | B．mine |
| C．hers | D．his |
Who is________ young lady with curly blond hair?
| A．a | B．an | C．the | D．/ |
The growing speed of a plant is influenced by a number of factors，________ are beyond our control.
| A．most of them | B．most of which |
| C．most of what | D．most of that |
________of the people on the Net ________China's economy is among the strongest in the world.
| A．Four fifth; believes | B．Four fifth; believe |
| C．Four fifths; believe | D．Four fifths; believes |
Who will be ___________ the company when the manager (经理) is out?
| A．in charge of | B．in the charge of |
| C．take charge of | D．take the charge of |