[ Vocabulary ]
Mirrors would then concentrate this stream within the tube into a continuous infrared __________ beam.
A. latitude
B. laser
C. mutation
D. magma

Random Topics:
Past Perfect Tense and Past TenseVerb FormArticlePast Simple, Present Perfect TenseFigure of SpeechGrammar RulesConjunctive AdverbSentence Adverbs & Third ConditionalVerb to Be Tenses & Object PronounGerunds + To InfinitiveOther quiz:
Grammar › ViewWhen Gregory arrived at the disco, Hanna ………….. .
A. already left
B. has already left
C. had already left
D. will have already left
Subjective and Objective Pronoun › View
My friends will learn English at course after _____ eat lunch at my home.
A. He
B. We
C. It
D. They
Grammar › ViewWhich of these are correct?
A. My mother’s birthday is on monday,
B. My mothers birthday is on Monday.
C. my mother’s is on Monday.
D. My mother’s birthday is on Monday.
Vocabulary and Modals › View
– Excuse me, __________ I use your bike?
– Yes, but you ________ bring it back to me in 1 hour.
A. should, have to
B. could, must
C. must, could
D. shouldn’t, must
