The number of cases of asthma ______ these days, perhaps ...

[ Progressive Tense ]

The number of cases of asthma ______ these days, perhaps partly because more people own cats.

A. increase

B. is increasing

C. was increasing

D. were increased

Select your answer:

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Auxiliary Words Modal Speculation Progressive Tense Comparisons Compound Adjectives Countable & Uncountable Nouns Adverb Clause Connector Asking and Giving Opinion Adverbs of frequency

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