They were surprised that a child should work out the problem _____ they themselves couldn’t.
– Your job ________ open for your return.– Thanks.
It is ________ that almost all the students like it.
Sentences can be ________ into clauses, and clauses into phrases.
I gave him a present but he gave me nothing ________
October 1st, 1949 is the day ________ the People’s Republic of China was founded.