[ Vocabulary ]
How does a volcano form?
A. when ice from glaciers build up
B. when rocks build up around a mountain
C. when lava pushes up through an existing mountain
D. when a lot of lava flows out at one spot and forms a mountain
Select your answer:
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Simple Tenses › ViewMy grandfather ______ for 40 years, but now he is retired.
A. works
B. is work
C. worked
D. work
Tenses › View
By the time the police _______________ (arrive), the thieves _______________ (escape).
A. arrived / had escaped
B. have arrived / escape
C. arrive / escape
D. had arrived / escaped