[ Modal Verbs of Deduction and Speculation ]
There’s someone studying at the library.
A. It can be David. I think he’s at home.
B. It can’t be David. I think he’s at home.

Random Topics:
Second ConditionalGrammar ClausesTOEFL GrammarSo / Neither / Either / TooInversions and SubjunctiveAlong & AgainstGrammar - Capitalization and Possessive NounsPast Continues TenseGerund or InfinitiveTransportation VocabularyOther quiz:
Vocabulary › ViewShe is very superstitious, she will not even walk under a ladder.
Superstitious means:
A. A notion maintained despite evidence to the contrary
B. A form of religion
C. Maintaining good faith
D. All of the above
Grammar › View
If he ______ help with his homework, he would say something.
A. need
B. needs
C. needed
D. had needed
Grammar and Vocabulary › ViewThe Rong house of the Xo Dang is …………….. big stilt house with a high roof.
A. a
B. an
C. the
Grammar › View
Don’t use this bicycle, because it ___ broken
A. is
B. are
C. do
D. does
