They were surprised that a child should work out the problem____ they themselves could not.
| A．once | B．unless | C．while | D．if |
Weighing two hundred pounds.
| A．she could not move the box | B．the box could not move |
| C．the box was too difficult to be moved | D．the box was too heavy for the girl to move |
Out teacherhis hand on my shoulder and said, “Don’t leave your booksabout.”
| A．laid, laying | B．lay, lain | C．laid, lying | D．lay ,laying |
made his parents worried.
| A．He came home late | B．His coming home late |
| C．He coming home late | D．Him late coming home |
is known to us all, the earth is round.
That is to sayis known to us all is that the earth is round .
| A．As, what | B．As, as | C．what ,as | D．What ,what |
They broke intoThey broke intoprison and set free all the people in prison.
| A．the ,/ | B．/,/ | C．the ,the | D．/,the |