There’s a feeling in me  _______we’ll never know what a UFO is—not ever.
#66670
A
that
B
which
C
of which
D
what
推荐题目
On returning from work, _____.  
#70204
A
John found a letter in the mailbox
B
a letter was found in the mailbox  
C
a letter was in the mailbox
D
the mailbox had a letter in it
______wants to stay in a hotel has to pay their own way.
#74496
A
Anyone
B
The one
C
Whoever
D
Who