.Oil prices have risen by32 percent since the start of the year, ______ a record US $57.65 a barrel on April 4.
It was until last year that he ______.
The boy pretended ______ his homework, when his parents came back home.
They need twenty more workers ______ their group to do the job..
In the cinema, there was an old man______ beside me.
He gets up early and reads English aloud, ___ he has greatly improved his English.