[ Grammar: Adjectives & Prepositions ]
We should be worried ……… climate change.
A. about
B. for
C. of
D. at

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Grammar › ViewA dash is primarily used to:
A. Show possession in a sentence
B. Replace a semicolon
C. Emphasize information, show interruptions, or set off a phrase
D. Indicate omitted words in a quote
Grammar › View
We ________ (phone) mom, but she wasn’t home. She ________ (go) out.
A. phoned / had gone
B. phone / goes
C. phoned / had went
D. phone / had go
Verb Tenses › ViewI ______ my teeth every night before going to bed.
A. brushes
B. brushing
C. will brush
D. brush
Grammar & Vocabulary › View
Can we play _______ card game?
A. one another
B. one more
C. one for
D. one on