[ Grammar ]
I ___ on this project for days without success.
a. have been worked
b. have been working
c. had being worked

Random Topics:
Past TenseActive Voice-Present tenseConjunctions and PrepositionPresent Perfect or Past Simple Tensewill, be going to, would like toActive-Passive VoicesPRESENT SIMPLE - CHILDRENReported Speech and Subjunctive1st and 2nd ConditionalsAdjectives or AdverbsOther quiz:
Grammar › ViewThe sunflower __________ beautiful as it grows bigger and taller.
A. look
B. looks
C. looked
D. was looking
Grammar › View
The clothes company is setting …… a new shop on the high street.
A. off
B. on
C. up
D. at
Conjunctions › ViewYou should always do some exercises, ———- what diet you are following.
A. although
B. in case
C. however
D. besides
E. no matter
Subjective and Objective Pronoun › View
My friends will learn English at course after _____ eat lunch at my home.
A. He
B. We
C. It
D. They
