[ Verb Tenses ]
I __________ my keys somewhere yesterday.
A. lost
B. lose
C. losing
D. loses
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Grammar › ViewDo you ever get the chance to practice ______ English outside class? (speak)
A. speaking
B. spoke
C. to speak
D. having spoken
Grammar › View
The students _____________ their classroom tomorrow morning.
A. will cleaning
B. will be cleaning
C. clean
D. cleans
Vocabulary and Grammar › ViewAircraft flying in …….. arcs create microgravity for tests and simulations that last 20-25seconds.
A. circular
B. parabolic
C. straight
D. oval
Grammar › View
________ the instruction, he knew how to use the fire extinguish
A. Read
B. Reading
C. Having read
D. Having readed