He looked at those jewels one after another ______and seemed to show no interest in any one of them.
______ good knowledge of several languages is essential to _____ study of comparative literature because without it one can read books only in translation.
I should not have laughed if Iyou were serious.
—Shall I attend my friend's comingofage ceremony, Mum? —No, unless you see to ________ that you will be home before 1000 PM.
bought three DVD copies of the film Avatar and now _ is left. Somebody just borrows something and never returns.
Jane is in a hurry because the train to the airport leaves _______ half an hour.