多益題目請教 - 自學

請教一下下面幾題

The boss will offer him a promotion if he____to be more tactful.
A. will learn B. had learn C. should learn D. were learning

這題為什麼是A, 結果句是未來式, if句不是應該是現在式嗎?

The survey indicates profits are up; business_________
A. is being good B. were good C. good D. has been good
為什麼是D? 不是A

謝謝回答^^

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