[ Present vs. Past Participle ]
I think your staff are … because they have been working hard all day.
- tired
- tiring

Random Topics:
Verb FormsAdverbs and Adverbial PhrasesConditional and Mix Conditional SentenceStative Verbs and TensesPresent Perfect and Present Perfect Progressive TensesInfinitive FormsClausesPreposition and ConjunctionAdverbial Clause of MannerPast TensesOther quiz:
Grammar & Vocabulary › ViewI have known Chris _______ we started school together.
A. since
B. for
Vocabulary › View
relating to the country or country life
A. duration
B. rural
C. exclude
D. analyze
Grammar › ViewThe lights were red but the car didn’t stop. The driver ….. the red light.
A. might not have see
B. might not have seen
C. might have not seen
Grammar › View
They walked slowly ______ the cave.
A. into
B. off
C. before
