There are still many problems ______ before we are ready for a long stay on the Moon.
#88396
A
solving
B
solved
C
being solved
D
to be solved
推荐题目
People are not allowed ______freely at the meeting and they don’t allow ______either.
#95790
A
talking; to smoke
B
to talk; to smoke
C
talking; smoking
D
to talk; smoking
You never imagine what trouble I have _________this paper in my house.
#96619
A
finding
B
to find
C
found
D
for finding
_________ to the sunlight for a long time does harm to one’s skin.
#91539
A
Exposing
B
Be exposed
C
Exposed
D
Being exposed
His first book ___________ next months is based on a true story.
#93027
A
published
B
to be published
C
to published
D
being published
She was supposed ______ at home at the moment, but her mother found her in the park.
#91287
A
to be reading
B
read
C
reading
D
to have read