[ Grammar ]
When his mother was young, she_________skate but she can’t do it any longer.
A. could
B. couldn’t

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Electricity Vocabulary › ViewWhat is an electrical circuit in which each resistor must have its own complete path to the voltage source, operating independently?
A. Series circuit
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C. Schematic
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Subject Verb Agreement › View
Either the principle or the Standard Four form teachers ________________ th ekey to the cabinet. Can you fetch it for me?
A. hold
B. holds
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A. or
B. and
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Past Tenses › View
We were … when the tsunami came
A. swam
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