[ Grammar and Vocabulary ]
Smartphone can be a great learning _______ but you need to think of how to use it effectively.
A. benefit
B. choice
C. invention
D. tool

Random Topics:
Adverb of MannersGrammar - to be, possessive, have gotSentence LabelingActive-Passive VoicesPast ParticiplesGrammar - some / anyFuture Perfect TenseGrammar: Have toPassive VoiceGrammar - PunctuationOther quiz:
Present Perfect Tense › ViewI have been in the U.S. ______ June 2nd.
A. For
B. Since
Few vs. Little › View
Only … employees work in the high technology sector.
- few
- little
Grammar › View
What type of phrase is it?
The carpenter hit the nail with a hammer.
_____
A. adverb
B. adjective
Grammar › View
Identify the word that has the opposite meaning with UP
A. down
B. little
C. ugly
D. over