He has read many books on history, so it's     for him lo answer these questions. 
#47527
A
hard
B
impossible
C
easy
D
serious
推荐题目
It rained______yesterday. And it,s very cool today.
#45382
A
friendly
B
strongly
C
heavily
D
brightly
The piano is too ________ for us ________. 
#45799
A
expensive; buying
B
more expensive; to buy
C
expensive; to buy
D
more expensive; buying