Many people agree that _________ knowledge of Englishis a must in _________ international trade today.

It is strange that Dave didn’t respond________any of my emails.—Something must have happened to him.[ ]

Tom is too short the leaves on the tree.

In _______ gesture to helppreserve history, the locals are repairing _______ large percentage of thehistoric sites steadily.

Do you like math—Yes, it’s difficult ________ really interesting.