[ Subject Verb Agreement ]
Three ingredients in this spray _______ poisonous.
A. is
B. be
C. are
D. was

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Grammar › ViewI visited my dentist last Tuesday _____ I had a terrible toothache.
A. and
B. but
C. so
D. because
Modals › View
I advise you to use natural remedies whenever you can.
A. You must use natural remedies whenever you can.
B. You ought to use natural remedies whenever you can.
C. You should to use natural remedies whenever you can.
Tenses › ViewTim ______________ (do) his homework before he went to bed.
A. have done
B. has done
C. had done
D. do
Grammar › View
Hoa (water) ___________ the flowers now.
A. is watering
B. waters
C. water
D. has watered