________ the mountains was hard work for them but as they looked around, they could not help screaming.
#96571
A
Climb
B
To climb
C
For climbing
D
They climbed
推荐题目
_____ he’s only been learning English for a year, he speaks it very well.
#98838
A
Considered
B
Considering
C
Having considered
D
To consider
______the room, a letter was seen lying on the desk.
#95493
A
Entering
B
Entered
C
After entering
D
When he entered