Mr.Zhao is going to the airport taxi.( )
in
on
by
Although it is raining _________, the policemen are still on duty in the street.
clearly
directly
heavily
Mr. Huang is an excellent English teacher who has over 20 years' teaching _________.
experience
information
knowledge
Uncle Liang has a great collection of _________watches.
enjoyable
valuable
comfortable
Eight members of a Chinese team arrived _________the top of Mount Qomolangma successfully.
at
to
Rivers low, mountains high, the same moon in _________sky.
a
/
the