I can’t decide _____.
| A．what to do | B．how to do | C．what should I do | D．how I should do |
To many foreigners, Guangzhou has become their hometown.
A. two B. second C. the second
Animals are part of nature should be well protected.
A. and B. or C. but
It is not polite to enter others’ rooms knocking on the door.
A. by B. with C. without
In LA Lingling lived with Smiths and got on well with the host family.
A. a B. the C. /
—Do you know_______tomorrow?
—Sorry, I don't know. You may surf the internet.
A.whether will it rain B if it will rain C whether does it rain