We should clean our teeth twice a day.
Our teeth ……………….
A. should be cleaned
B. shouldn’t be cleaned
C. should be clean
D. should cleaned

Random Topics:
Homophone & HomonymPhrasesSimple Present - WH QuestionsNumbersFuture - will / going to / present continuousPreposition and Preposition PhraseCompliment, Congratulation, and HopeAdverbs of DegreeGrammar - Future ActionVerb to beOther quiz:
Synonym and Antonym › ViewIndicate the word(s) OPPOSITE in meaning to the underlined word(s) in each of the following questions.
With so many breakthroughs in robotic science and technology, much manual work will soon be taken over by robots.
_
A. intellectual work
B. physical work
C. monotonous work
D. dull work
Grammar › View
Point out the dependent clause in the following sentence: “Because she studied hard, Maria aced the exam.”
A. Because she studied hard
B. Maria aced the exam
C. Because Maria aced the exam
D. Hard, Maria aced
Simple Past Tense › ViewSimple Past Tense – choke
A. choked
B. choken
C. chokening
D. chokes
Grammar › View
Gina: Will you help me carry some things to my car? Sam: Yes, I will.
A. True
B. False
