[ Idioms ]
I am sorry that I am late. I got ___ in traffic.
a. lifted off
b. held down
c. caught up

Random Topics:
CommasSentences and Non SentencesComparison DegreeWill & Be going toTenses of Verbs - UsageHave vs. HasAdverb of FrequencyVerb Types and TensesPerfect ModalsModal and Modal PerfectOther quiz:
Grammar › ViewChoose the correct form: “___ (there) a library near your house?”
A. Is there
B. Are there
C. There is
D. There are
Grammar › View
I’m tired today ___ I couldn’t sleep last night.
a. so
b. because
We ___________ exercise every day
A. Must
B. Mustn’t
C. Have to
D. Don’t have to
Vocabulary › View
When having days off, he always helps his wife tidy up the house.
FIND THE OPPOSITE MEANING
A. clear up
B. sort out
C. arrange
D. mess up