The little boy is dirty from head to foot because he in the mud all morning.
| A．has played | B．has been playing | C．is playing | D．was playing |
__________ her son for half a month, Marcia decided to leave for Texas with the hope of finding him.
| A．Not heard from | B．Having not heard from |
| C．Not to hear from | D．Not having heard from |
Mrs. Obama introduced the Let’s Move _______ yesterday. Its goal is to reduce children obesity(肥胖) today and in the future.
| A．challenge | B．battle | C．campaign | D．behavior |
—I think the whole class is going on a field trip next Friday.
—I’m not sure. ____________ has paid the transportation fee.
| A．Not everyone | B．No one | C．None of them | D．Neither of us |
_______ in a poor family made Yuan Longping determined to solve the hunger problem in China when he was still young.
| A．Bringing up | B．Being brought up | C．Having brought up | D．Brought up |
To our relief, Xiaodan as well as the other children who ______ no parents ______ good care of in the welfare institute.
| A．have; is being taken | B．has; are being taken |
| C．has; is being taken | D．have; are being taken |