—Jack ,I have ________working out the math problem .
--Don’t worry . Let me help you .
A. fun B. trouble C. experience
grandfather worked very hard, he couldn’t support the big family.
| A．Though, but | B．/, and | C．Though, and | D．Though, / |
LangLang has a gift for piano.
| A．playing | B．play the | C．playing the | D．making the |
While hethe bus, hea book.
| A．was waiting for, read | B．waited for, was reading |
| C．was waiting for, was reading | D．waited for, read |
Listen! Someone in the next room.
| A．cry | B．crys | C．is crying | D．was crying |
The telephone rang when wedinner.
| A．had | B．have | C．are having | D．were having |