[ Present Tenses ]
We have to rest. We ………………………………… (walk) for over four hours.
A. have walked
B. are walking
C. have been walking
D. walk

Random Topics:
Modals and Modal PerfectsConditional TensesPast and Past ContinuousAdjective OrderShould and Shouldn'tTensesModals and VocabularyFragment, Comma Splice and Run -on SentencePresent Simple Tense PassivePresent Simple QuestionsOther quiz:
Grammar › ViewThe new employee is capable ________ adapting to different work environments.
A. of
B. at
C. about
D. from
Tenses › View
On July 20,1969, Astronaut Neil Armstrong ………………….. down onto the moon, the first person ever to set foot on another celestial body.
A. was stepping
B. stepped
C. has stepped
D. was step
Vocabulary › ViewMy father stopped working last year and is now enjoying a long vacation. After 30 years of employment, he ________________.
A. Got promoted
B. Got divorced
C. Retired
D. Pensioner
E. Got fired
Compound Sentences › View
In a compound sentence, the comma comes ______________ the coordinating conjunction.
A. after
B. before
C. there is no comma