[ Tenses ]
I ________ many white-collar jobs since it appeared.
A. had threatened
B. has threatened
C. threatened
D. will threaten

Random Topics:
Verbs & Phrasal VerbsUnscramble SentenceGrammar - Present PerfectMixed ConditionalsHave as verb and auxiliaryLinking VerbsAdverb ClausesTenses & PrepositionIdentifying Sentence TypesRegular Plural NounsOther quiz:
If- Conditional › ViewNobody could __________ alive from this avalanche unless they believed that man could resurrect.
A. emerge
B. degrade
C. prosper
D. deliberate
Phrasal Verbs › View
Please make _____ your mind as we need to leave.
A. over
B. up
C. around
Present Tenses › ViewI am waiting for you
A. Present Perfect
B. Present simple
C. Present Perfect Continuous
D. Present Continuous
Irregular Verb › View
I … (see) you walking down the hill yesterday morning.
- seen
- saw
- see
