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 |
When I opened the door I found my son completely ______ a game.
| A．absorbing in | B．absorbed to | C．absorbed in | D．absorbing to |
______ it rains tomorrow, they’ll go out for an outing.
| A．As if | B．As though | C．Even if | D．Even so |
Our car ______ on our way to school, so we had to walk there.
| A．broke up | B．broke off | C．broke down | D．broke away |
Wang Ping found the new surroundings difficult ______.
| A．to tolerate | B．to be tolerated | C．tolerating | D．being tolerated |
Only if you put ______ sun there did the movements of the other planets in ______ sky make sense.
| A．the; 不填 | B．the; the | C．不填; the | D．a; the |