He felt _______ to remind the public to protect the environment.
#93974
A
his duty
B
that is his duty
C
it his duty
D
it is his duty
推荐题目
－I’ve read another book this week.－Well, maybe _____ is not how much you read but what you read that counts.
#94680
A
this
B
that
C
there
D
it
Loulan is believed __________ over by sandstorms gradually from AD200 to AD400.
#92411
A
to cover
B
to be covered
C
to have covered
D
to have been covered
. ---Learning a language isn’t easy. It takes time.---I agree. ________. There is no short cut.
#94130
A
All roads lead to Rome
B
Rome was not built in a day
C
Practice makes perfect
D
Slow but sure wins the race
Mike has much difficulty ________ Chinese so he often asks me ________ help.
#92686
A
to understand, with
B
understanding, of
C
to understand, for
D
understanding, for
—Did you enjoy your holiday?—Yes．it's the best holiday I these years．
#91894
A
had
B
would have
C
had had
D
have had