______ difficult the problem was, he tried his best to solve it.
#68408
A
No matter
B
Although
C
Whatever
D
However
推荐题目
Government reports,legal papers and most business letters are the main situations________English is used.
#72715
A
when
B
that
C
how
D
where
The fact has worried many scientists _____ the earth is becoming warmer and warmer these years.
#68141
A
which
B
that
C
as
D
what
Mary wrote an article on ______ the team had failed to win the game.
#72544
A
why
B
what
C
who
D
that
2. --- Give me a call as soon as you ______ in Hainan. --- OK, I will
#40971
A
arrive
B
have arrived
C
will arrive
D
arrived