Put the ___ of your tongue against your upper teeth when you produce the sound.
| A．tip | B．top | C．peak | D．pole |
The film The Founding of a Republic is wonderful because about 80 stars appear in it, some of ________ are world-famous.
| A．who | B．whom | C．them | D．those |
—Tom graduated from college at a very young age.
—Oh, he ______ have been a very smart boy then.
| A．would | B．should | C．must | D．might |
It was reported that 115 miners _____ in the flooded mine for eight days were pulled out alive at last.
| A．trapped | B．being trapped | C．were trapped | D．had trapped |
Police were sent out to keep the traffic ________ smoothly during the snowstorm.
| A．being run | B．run | C．to run | D．running |
Michael ________ football regularly for many years when he was young.
| A．was playing | B．played | C．has played | D．had played |