The farmers were more anxious for rain than the people in the city because they had more _____.
| A．at length | B．at last | C．at stake | D．at ease |
A group of children ______ hide and seek in the garden.
| A．is playing | B．are playing | C．has been playing | D．was playing |
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 |