—You should say sorry to him, I think.—________! It's his fault.
.It was in the small house ___was built with stones by his father ___ he spent his childhood. A. which; thatB. that ;whereC, which; which D. that; which
_________ the project in time, the workers were working at weekends.
_________ many times, he finally understood it.
The chairman thought _________ necessary to invite Professor Smith to speak at the meeting.
It was not until nearly a month later _________I received the managers reply.