20 COMPLETE THE FOLLOWING SENTENCES USING AN APPROPRIATE AUXILIARY V...

2.20 Complete the following sentences using an appropriate auxiliary verb form. (i) You have been riding non-stop for hours. You __________ be very tired. a) must b) can c) ought (ii) She __________ be about forty. a) must b) can c) will (iii) I know I left my phone on this table and it is not here now. Somebody __________ it. a) must take b) must have taken c) can have taken (iv) That __________ be true. She will never do something like that. a) can’t b) shouldn’t c) shall (v) You __________ him a fool. It really upset him. a) shouldn’t call b) shouldn’t have called c) can’t have called (vi) The doctor said I __________ give up smoking. (vii) __________ you mind standing up for a moment? a) Should b) Would c) Either could be used here (viii) That was a bad place to go hiking. You __________ your back. a) could have broken b) should have broken c) would have broken (ix) ‘Who is at the door?’ ‘It __________ be the postman.’ a) must b) could c) Either could be used here