—Shall I help you carry your travel case to the train ,Granny? —Oh,no,my boy.It is heavy.Thank you anyway.
We decided not to climb the mountain because it was raining ___.
The number of people invited ___ fifty, but a number of them ___ absent for different reasons.
Many people agree that ___ knowledge of English is a must in ___ internationsl trade today.
Tom felt that he knew everybody’s business better than they knew it___.
John, you ___ play with the knife, you __ hurt yourself.