[ Grammar & Vocabulary ]
Every month, scientists … new gadgets to help us with our daily life.
A. estimate
B. involve –
C. invent
D. experiment

Random Topics:
Adverb Clauses of TimePresent Perfect Negative and InterrogativeGrammar ClausesPresent Simple TensePast Simple vs Present SimpleDemonstrative PronounAction VerbIF CLAUSESimple Verb TensesFuture Simple TensesOther quiz:
Comparatives and Conjunctions › ViewI want to go to the park, __________ it is raining.
A. and
B. but
C. so
Grammar › View
My parents ________ at work all day yesterday.
A. was
B. were
C. are
D. will be
Grammar › ViewVerb ending in -ing: Select the -ing form of a verb:
A. shine
B. shines
C. shining
D. shone
Clause › View
I must do whatever my doctor says to me.
A. Noun clause as subject
B. Noun clause as object
C. Noun clause as object of verb
D. Noun clause as object of preposition
