[ Tenses ]
We use the (…) instead of the past perfect when we want to talk about a longer action that continued until another past action.
A. past simple
B. past continuous
C. past perfect
D. past perfect continuous

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Perfect ModalsPresent Simple & Present Continuous TensesAdverbs, Infinitives, Definite ArticlePresent ContinousConditionalsCompliment, Congratulation, and HopePresent Perfect Simple & Present Perfect ContinuousPresent Simple and Modal VerbsPast Perfect Simple & ContinuousModalsOther quiz:
Grammar › ViewI went out with my best friend two hours ___.
A. ago
B. yet
C. already
Present Tense › View
You look worried. What _____?
A. do you think
B. are you thinking
C. have you thought
D. have you been thinking
Phrasal Verbs › ViewLook up to
A. Think about something in the past
B. Experiment with an idea
C. Respect or admire an older person
Grammar › View
Identify the adjective. Caring people are often rewarded.
A. rewarded
B. people
C. often
D. caring