___has recently been done to provide more buses for the people ,a shortage of public vehicles remains a serious problem . 
#73502
A
That
B
What
C
In spite of what
D
Though what
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    I could not remember the text .
#68396
A
However hard did I try
B
However hard I tried
C
However I tried
D
However had I tried hard
_____ wants to study well must learn things _____.
#73669
A
No matter who; with heart
B
Who; with his heart
C
Whoever; by heart
D
Whoever; by his heart
________ I need is more time.
#68756
A
That
B
What
C
/
D
Which