-----Hello, Jessica! What happened?----- I could not hear you clearly because my mobile phone could not receive a good ________.
#5425
A
sign
B
signal
C
symbol
D
mark
推荐题目
Life is full of _______.School is thought as the most ­­­_______ obstacle(障碍) in the lives of youth today.
#5478
A
challenge; challenging
B
challenges; challenged
C
challenges; challenging
D
challenging; challenges
 Their plan was ____. With it we had little trouble in finishing the work.
#6675
A
success
B
succeed
C
a success
D
a successful