[ Vocabulary ]
What are atoms of the same element that have different numbers of neutrons?
A. aluminium
B. radioactive dating
C. isotope
D. hydrogen
Random Topics:
Past Perfect and Past Perfect ContinuousPresent Tense vs Past Tensewill, be going to, would like toConditional and Mix Conditional SentencePrepositions of Location, Movement and TimeWill and Will notReporting VerbsTenses PracticeAdjective or AdverbComparativeOther quiz:
Present Continuous Tense › ViewYou ________ the dog now.
A. are walking
B. is walking
C. walking
D. walk
Linking Verb › View
Your English is improving. It is getting ______.
A. well
B. good
C. much well
D. clearly
Subject Verb Agreement › View. Neither of the solutions (works / work) for the problem.
A. works
B. work
Few vs. Little › View
Let’s go outside for ___ fresh air.
a. a little
b. a few