His English ________ a lot since he took the course.
#37514
A
improved
B
was improved
C
has improved
D
has been improved
推荐题目
--- How was your day off?--- Pretty good! I ______ the science museum with my classmates.
#41805
A
visit
B
visited
C
am visiting
D
will visit
—Did you meet the professor at the airport?—No，he ____ by the time I ____ there．
#42354
A
had left；got
B
has left；reached
C
was leaving；got
D
left；had got
Every year lots of trees ________ to make our country more beautiful.
#39871
A
is planted
B
was planted
C
are planted
D
were planted