[ Grammar ]
Choose the correct preposition.
The conference is going to begin _______ 9 0″ clock in the morning.
A. By
B. At
C. Within
D. Between

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Present and Past TenseAdverb Clauses of TimeGrammar - ConnectorsPresent/Past/Past ParticplePreposition after some VerbsHomophone & HomonymInfinitives for reasonsSimple vs Continuous Past TenseComparatives - SuperlativesModals of ObligationOther quiz:
Past Continuous and Past Simple Tense › ViewWhile the students …………………… English, some students …………………. their other works in the class, then the teacher got angry.
A. was learning / do
B. learned / was doing
C. were learning / were doing
D. were learning / was doing
Grammar › View
The green grapes are sweet. The purple grapes are also sweet. The green grapes are as __ as the purple grapes.
A. sweet
B. smooth
C. sweetest
D. smoothest
Modal Verbs › View………………I have some coffee, please?
A. May
B. Should
C. Can
D. Would
Modals › View
We __________ always respect our elders.
A. can
B. will
C. should
D. could
