[ Tenses and Sentence Completion ]
I can’t understand ______ she is upset.
A. what
B. why
C. where
D. how

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Mixed General Quiz › ViewInsulation was fitted to ___ further heat loss from the building.
a. guard
b. protect
c. save
d. prevent
Grammar › View
Vicky exercises one hour every day. She jogs or play sports.
A. on
B. for
C. with
D. in
Articles › ViewDid you study ….. physics at school?
A. a
B. an
C. the
D. zero article
Gerund › View
She avoided ________ out tonight
A. telling
B. told
C. telt
D. tells
