Two fifths of the rice in our city________from Heilongjiang and Jilin．
A．is
B．are
C．am
D．be
There are________students in our school．
A．three thousands
B．three thousand
C．three thousand of
D．three thousands of
They spend two hours________TV every day．
A．to watch
B．watch
C．to watching
D．watching
They wonder when________next week．
A．to start
B．start
C．to starting
D．starting
She often encourages me________up smoking．
A．to give
B．give
C．to giving
D．giving
The best present I________is a CD player．
A．received
B．have received
C．receive
D．am receiving
