Topics: Gerunds and Infinitives
As doctors continue (search) _______ for a cure for the common cold, they have found some things that make people more vulnerable to catching a cold.
A. to search
B. searching
C. to search
D. “to search” and “searching”
Select your answer:

Random Topics:
Preposition of DirectionPreposition after some VerbsPaired ConjunctionTenses and ConclusionsConjunctive Adverbs and PunctuationVerbs of movementAdjectives-Comparison, SuperlativeMay, MightVocabulary & Phrasal VerbGrammarOther quiz:
Tenses › ViewLook! Our kites ____ fly high in the sky.
A. fly
B. are flying
C. is flying
Grammar & Vocabulary › View
Volunteer work is a great way to _______ experience in a broad range of fields.
A. gain
B. do
C. make
D. take
