If we ______ take environmental problems seriously, the earth _______ worse and worse.
| A．don’t; will be | B．won’t; isn’t |
| C．won’t; is | D．don’t; won’t be |
Don’t read .It’s bad for your eyes.
| A．in the sun | B．in sun |
| C．under the sun | D．under sun |
Sam spends two hours _______ his homework every day.
| A．to do | B．doing | C．do | D．does |
I want to be a doctor when I _______.
| A．grow up | B．talk about |
| C．get up | D．was born |
Tom was sad because he did _______ in the math exam.
| A．good | B．well |
| C．badly | D．bad |
The ____________man can carry some water every day.
| A．81-years-old | B．81-year old |
| C．81 years old | D．81-year-old |