51. he (to miss) a lot of classes this week. 2. i(to be) in london for six months by the time i leave. 3. she knew (to speak) to her father. 4. they (to discuss) it from 10 to 12 at tomorrow's meeting. 5. she (to work) out a plan yet. 6. perhaps they (to discuss) the issue tomorrow. it started to rain heavily. 7. we (to play) tennis for about half an hour when 8. by the end of next term she (to study) for nine years. 9. (to try) to find the hotel all day. 10. she (to pass) all the exams at last.
2 I'll have been
3 'll have to speak
4 will be discussing
5 hasn't worked
6 will discuss
7 had been playing
8 will have been studying
9 were trying
10 has passed