— The weather isn’t good enough for an outing , is it？— No. We can’t have _________at this time of the year.

—What’s Jack up to in the shoe shop? He’s there for ages.—It’s ______ that he hasn’t decided which pair to buy.

By now, when one makes a large purchase, he should have ___ opportunity to change his mind.

 “This book is ______ more useful for us students.” “Yes, but it is _______ too difficult.”

—It’s already nine o’clock.Would now be a(n)                    moment to show the sides?—OK,go ahead please.