— Guess what! I have won the first prize in the speaking competition.
— Congratulations! You _____ put a lot of work into it.
| A．should | B．must | C．should have | D．must have |
When the old man died, it that she was actually rich.
| A．found out | B．came to light | C．knew | D．see the light |
They were filled with joy when they Chinese soil in late July.
| A．set foot in | B．set foots in | C．set foot on | D．set foots on |
The theory was attacked when it was first , but gradually it was accepted.
| A．put up | B．put down | C．put forward | D．put away |
Recent research has the cause of the disease.
| A．thrown off | B．thrown open | C．thrown out | D．thrown light on |
More and more students are this modern type of instruction.
| A．resulting from | B．figuring out | C．benefiting from | D．bringing up |