When should I hand in mypaper?— Your paper must _as soon as the bell_ .

These days the government has issued several economicpolicies that will ________prosperity of manufacturing industry.

I have no pencils _____ pens, but Mary and Andy have some.

It remains to be seen what effects the new educational reform will _________ students.

Can I call you back at two o’clock this afternoon? —I’m sorry, but by then I______ to BeijingHow about five?