—The woman biologist stayed in Africa studying wild animals for 13 years before she returned.—Oh, dear! She _______ a lot of difficulties!
Afteryouhavelearnedsomethingnew,itisimportantthatyoutryto_________.
Do you know the boy _______ under the big tree?
-What do you think of the book? -Oh, excellent. It’s worth ______ a second time.
Go on _______ the other exercise after you have finished this one.
There was a terrible noise ______ the sudden burst of light.