Having mastered the technologies of manned spacecraft, China became the third country in the world ______ manned spaceflight independently.
#95914
A
develop
B
to develop
C
developing
D
developed
推荐题目
Mrs. White found her husband ________by letters and papers and________ very worried.
#94965
A
surrounding ; looked
B
surrounded ; looked
C
surrounding; looking
D
surrounded ; looking
___ made us disappointed. 
#97111
A
Her not coming back
B
Not her coming back
C
She didn’t come back
D
She not coming back