11.My father stayed in Japan only a few months, _____he went through a series of hardship.
The audience was _____ very young children so there was a lot of noise while the concert was going on.
The chairman thought _____ necessary to invite Professor Smith to speak at the meeting.
She ______his number in the phone book to make sure that she had got it right.
You said boys were cleverer than girls. That is _______ I disagree.
With the rapid growth of population, the city______ in all directions in the past five years.