People working 10 or 11 hours a day are more likely to suffer from heart problems than_____ who go off duty after seven hours．
| A．those | B．that | C．these | D．them |
—Thank God we’ve finally cleared up some problems. Let’s ______, shall we?
——All right. See you tomorrow.
| A．go Dutch | B．get it straight | C．call it a day | D．make a meal of it |
So far all cloned animals have suffered from some different serious disorders, ______ dying soon after birth.
| A．many of which | B．many of whom | C．many of that | D．many of them |
—The room is in a mess again!
——Sorry. It is ______ who ______.
| A．me, is to blame | B．I, is to be blamed | C．me, am to be blamed | D．I, am to blame |
——Why didn’t you call me this morning?
——I ______ call you. I called you all the morning, but I couldn’t ______.
| A．did, get over | B．do, get it | C．didn’t, get together | D．did, get through |
When ______ by the teachers, a student tends to study harder than usual.
| A．to be praised | B．praising | C．praised | D．to praise |