Great inventors don’t ________ graduate from famous universities. Some didn’t even go to university.
Please go on trying, I’m sure the efforts you are ________ will pay off.
–Who is the man talking to the headmaster? –A professor ________ a visit to our school.
Scientists found many stones ________ with numbers on the mountains.
–The plane is due to take off at 7:50 from the airport.–________ we fail to arrive there in time. –Try to take another flight then.
–I’d like to buy a new CD player. –Well, we have several models ________.