Present Continuous or Present Simple? 1 The operation (not cost) much money.
2 You (want) to be a nurse or a doctor?
3 I can’t talk to you at the moment. I (take) the Obs in Room 6.
4 You (understand) me? Mr. Adams is allergic to penicillin.
5 I (go) to the dentist on Tuesday morning.
6 Alex ( get married) next month.
7 Where it (hurt)?
8 You (take) any medication for diabetes at the moment?
9 “What’s the problem?” “My back (ache).”

1. I am glad (to be introduced) to you. 2. The box was (to  be handled) with care. You should (ask) someone (to help) you. This might not (have happened). 3. Her mood seems (to have changed) for the worse. We had better not (speak) to her now. 4. I am sorry (to have disappointed) you but I did not mean anything of the kind. 5. He is happy (to have been awarded) the first Landscape Prize for his picture. 6. He was anxious (to take) the first place in the figure-skating competition. 7. The poem can easily (be memorized). 8. This poem is easy (to memorize). 9. I did not expect (to be asked) this question. 10. There were so many things (to do), so many experiments (to try). 11. The teacher expected him (to give) a better answer at the examination. 12. They are supposed (to have benn experimenting) in this field for about a year and are believed (to have achieved) good results. 13. He must (have read) something funny; he is smiling all the time

he knows mathematics much better than he did last year.he must   work a lot in summer.2.your mathematics is very poor.you must to work at it in summer.3.where is peter? -oh,he must read in the library.he is getting ready for a very difficult examination.4.you must to study english for several years already.your language is very good.5.oh,look how white and clean everything is! it must to snow at night.6.oh,you are all in snow,you look like a snowman.it must   snow heavily.7.look,what huge snowdrefts yhere are everywhere,and the path is covered with knee-deep snow.it must to snow for several hours already.8.you look fresh! you must   have a good sleep at night.9.9you look very tired.you must have a good sleep at night