Topics: Linking Verb
Implementing effective traffic management strategies can help alleviate ………jams in busy cities.
A. device
B. operation
C. sensor
D. traffic
Select your answer:

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Tenses › View. She usually ______ (wake up) at 7 AM.
A. wakes up
B. is waking up
C. has woken up
D. has been waking up
Grammar › View
…….you gone to your work yet?
A. Have
B. Has
