Knowing ________ you’re good at and doing even more of it creates excellence.
A．where B．which C．what D．that
It is a wise father ________ knows his child.
A．that B．which C．what D．whom
—May I smoke here?
—Choose a seat in the smoking section, if you ________.
A．should B．must C．can D．may
---Would you like to go out for a walk?
---- ．
A．No,but I can’t afford the time
B．No,I don’t feel in the mood for it now
C．You may ask your sister to go,too
D．No,thank you
As a result of the serious flood,two-thirds of the buildings in the areas ．
A．need repairing B．need to repair
C．needs repairing D．needs to repair
All of the children ______ in the school play and they are in high spirits.
A．are involving B．involve
C．are involved D．have involved
