[ Grammar ]
I was surprised by __________ understand the difficult concepts.
A. be able to
B. being able to
C. to be able to
D. been able to

Random Topics:
ExclamationPossessive NounsPresent and Past TenseIELTS GrammarConditional Sentence Type 3Gerund NounPoetryComperative and SuperlativeGrammar - Verb FormsGrammar - Present Perfect with already, just, yetOther quiz:
Grammar › ViewIt is now 7 a.m. Adelia …….. going in the school.
A. Was
B. Were
C. Are
D. Is
Modal Verbs › View
When she got thinner, she ____ take her dress in.
A. will have to
B. should
C. has to
D. had to
Present Perfect and Simple Past Tense › ViewI _____ (hurt) my finger. It is okay now.
A. has hurt
B. hurted
C. hurt
D. have hurt
E. have hurted
Grammar › View
The smart boy answered every question ____________.
A. honestly
B. truthfully
C. correctly
D. politely
