His grandparents used to ________ a walk after dinner, but now they are used to ________ a walk after breakfast.
#50244
A
take, take
B
taking, taking
C
taking, take
D
take, taking
推荐题目
—It’s necessary ____ our environment(环境).  —I agree with you. 
#50553
A
protect(保护)
B
protecting
C
to protect
D
protects
 I would rather die than ______.
#49197
A
to give in
B
gave in
C
giving in
D
give in