Only when he told me ________what trouble he was in.
| A．did I realize | B．I realized | C．do I realize | D．I realize |
________ you stepped into the lab with your shoes on? You’re supposed to take them off before you enter it. I told you so!
| A．How come | B．How dare | C．How about | D．How long |
The number of the people present at the concert ________ much smaller than expected. There ________ many tickets left.
| A．was; was | B．were; was | C．were; were | D．was; were |
It was not until I got home ________ I found my wallet missing.
| A．that | B．when | C．where | D．which |
Comrade Wang ________ be in Shanghai—I saw him in the company only a few minutes ago.
| A．mustn’t | B．can’t | C．may not | D．isn’t able to |
—Little Jim has been eating sweets all day.
—It’s no ________ he is not hungry
| A．matter | B．doubt | C．problem | D．wonder |