My grandfather goes to see two________ (documentary) every month.
第1题:
A.Son
B.Father
C.Grandfather
D.Great-grandfather
第2题:
19.
A.forget
B.forgets
C.go
D.goes
第3题:
第4题:
A. Every 5 minutes
B. Every 90 seconds
C. Every 60 seconds
D. Every 30 seconds
第5题:
Each life jacket light that has a non-replaceable power source must be replaced ______.
A.every 6 months after initial installation
B.every 12 months after initial installation
C.every 24 months after initial installation
D.on or before the expiration date of the power source