So many problems ________, he is having a difficult time.
#88268
A
settled
B
to settle
C
settling
D
are to settle
推荐题目
 The text is too difficult. The explanation of our teacher will help make it easy ________.
#88517
A
to understand
B
to be understood
C
understood
D
understanding
What difficulty will you have _______ people when you stay in a foreign country?
#96648
A
understanding
B
understood
C
to understand
D
understand
In the library, I found a useful book ______ how to use English grammar.    
#93528
A
to explain
B
explained
C
having explained
D
explaining
He did nothing but ________walk in the street. 
#95370
A
taking    
B
take    
C
to take    
D
took