For our middle school students, some courses are compulsory, while others are ________.
#19297
A
flexible
B
optional
C
impressive
D
significant
推荐题目
Everybody got ____ when they heard the ____ story.
#18078
A
shocking; frightened
B
shocking; frightening
C
shocked; frightening
D
shocked; frightened
—Our family will go to Australia for a holiday. —Oh, really? That sounds __________!
#18292
A
fantastic
B
fragile
C
flexible
D
Fragrant
The biggest problem with Bob is that he never has got a/ an ___ goal in his life.
#19546
A
abstract
B
specific
C
delicate
D
aggressive
Life in that poor town is _______ a bed of roses.
#20397
A
by far
B
above all
C
far from
D
all the same
The reason why this kind of machine is popular with users is that it will work in ______ temperature.
#18318
A
official
B
extreme
C
common
D
natural