—Did you spend a lot of time looking for the missing child?
—________. It took us a long time, but luckily we found him.
A．My pleasure B．Absolutely C．Not at all D．Don’t mention it
However, at times this balance in nature is disturbed by human activities, _______ a number of possibly unforeseen effects.
A．lying in B．calling in C．taking in D．resulting in
The news that he fought with his coach surprised us, ________?
A．did he B．didn’t it C．didn’t he D．did it
It doesn’t matter ________ you take it seriously, for _______ matters is that he can realize it.
A．whether; that B．that; what C．whether; what D．that; that
These facts are unimportant in ________, but if you put them together, you may find something unusual.
A．it B．them C．itself D．themselves
Mary’s house in Shanghai cost much more than ours in our hometown, though not half______.
A．much bigger B．as bigger C．very big D．so big
