[ Modals ]
I can’t find my keys. I _____ to take them when I left the house this morning.
A. must forget
B. must have forgotten
Select your answer:
Random Topics:
Irregular VerbGood vs. Well Simple Past Future Tense Grammar - Collective NounsCountable - UncountableSynonymsSecond Type ConditionalDirect-Indirect SpeechTOEFL Grammar
Other quiz:
Grammar › View‘… ago’ is a signal word for …
A. Past Simple
B. Present Perfect
Grammar › View
Its economy centers ________ the production of rice.
A. at
B. to
C. on
D. with
How to use : Read the question carefully, then select one of the answers button.