Although the educational systems have been       a lot, the loads of the students are still very heavy.
#73677
A
transformed
B
transported
C
transferred
D
transmitted
推荐题目
The Anti-Japanese War ________ in 1937 and it _______ eight years.  
#71309
A
was broken out; lasted
B
broke out; lasted
C
break out; lasts
D
broke out; last