Did you reach the top of the mountain? —Yes．Even I myself didn’t believe I could ______ it．

You never feel worried before an exam, how can you —Well, I’ve been working hard all the time. Surely I am _________ any exam.

It was ________ she got home ________ she found her diamond necklace missing

time our teacher arrives tomorrow,all the work_____,with which he will be satisfied.

How much are these shoes _________ twentydollars.