Color-blind people often find it difficult to _____ between blue and green.
A．compare B．separate C．distinguish D．divide
Scientists say it may be five or six years ______ it is possible to test this medicine on human patients.
A．before B．after C． since D．when
If you commit a crime, you will ____ punishment.
A．desire B．deserve C．demand D．desert
The victims of the accident demanded that the case ______ at once.
A．would be looked into B．should look into
C．be looked into D．look into
We each took ______ tea after having ______ wonderful supper at my aunt’s yesterday.
A．a; / B．/; / C．the; the D．a; a
It was a bad year for films, _______ both quantity and quality.
A．in terms of B．in addition C．as a result of D．on average
