1. The weather is not what it was the day before.
2. That is why she has come to us.
3. The problem is that he has lost her telephone number.
4. The question is whether they will be able to visit us.
5. The question was why no one had helped the old woman.
Придаточные предложения соеденяются с главным такими союзами как - that, wether, if.
Или союзныи словами - Who (whom), whose, what, which, when, where, how, why.
1. He went to his study but he could't work.
2 he was mistaken, however he went on doing his way.
3 I asked him why he had come.
4 The man who lives next door is very friendly.
5 How important it is to start the work right away is clear to everybody.
