_______, according to the instructions, the medicine, I think, will work on your headache before long.
| A．Take | B．Being taking | C．Taken | D．Taking |
All but one ______ here just now.
| A．is | B．was | C．have been | D．were |
The police ______ for the lost child everywhere.
| A．is looking | B．has looked | C．are looking | D．are looked |
Both bread and butter ______ on sale in this shop.
| A．is | B．are | C．have | D．has |
The problem is _____ we can master modern science and technology in a short time.
| A．if | B．that | C．what | D．how |
Give it to _____ you think can do the work well.
| A．who | B．whoever | C．whom | D．someone |