[ 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:
Verb, Object, Preposition › ViewHe congratulated her _______ her promotion.
A. for
B. on
C. from
Pronunciation and Vocabulary › View
__________ are a popular way to raise money for schools and clubs because lots of people love cakes, cookies, muffins, pies and biscuits.
A. Bake sales
B. Craft fairs
C. Talent shows
D. Garage sales
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
