IV. Complete the sentences using words in bracket.
1) If he ____________ (have) a temperature, he________________ (see) the doctor.
2) If we won the lottery, we________________________ (fly) to London.
3) After they ___________________ (finish) lunch, they went out.
4) Hoa and Lan ____________________ (not/meet) before the exam.
5) I _________________________ (not/have) lunch when she arrived.
6) While we ________________ (run) in the park, Mary fell over.
7) His mother is unhappy _______________ (because/ because of) his room is untidy.
8) Alice _________________ (see) the accident when she was catching the bus.
9) He said that He _____________________ (not/visit) the US before.
10) If we travel to Hanoi, we_____________________ (visit) the museums.