The _____ population has caused many serious problems.
| A．increase | B．increased | C．increasing | D．increases |
相关试题
Tom _________ my friend. Tom’s two brothers _________ my friends too.
| A．is; are | B．are; is |
| C．are; are | D．is; is |
—________
—I’m fine. Thank you.
| A．Are you Mary? | B．How do you do? |
| C．How are you? | D．Hi! |
— _________
— Yes, I’m Peter.
| A．What’s your name? | B．What are you? |
| C．How are you? | D．Are you Peter? |
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