Which is correct? 必須選其一

B. Siu Keung passed every test.

A. Siu Keung pass all tests.- WRONG

B. Siu Keung passed every test last week- SIMPLE PAST TENSE BY ADDING TIME IN THE PAST

C. Siu Keung passes every tests. CORRECT- SIMPLE PRESENT TENSE

答案是：B. Siu Keung passed every test.

為甚麼呢？
首先Siu Keung是第三身單數名詞，故動詞必須是單數形現在式，或過去式，因此A就不對
而every解做每個，全部時，要與單數形可數名詞連用，故此，every tests就錯了，剩下的，就只有B符合以上兩個條件
希望幫到你！

I think the correct one is C. Siu Keung passes every tests.

"C" is correct

The correct answer should be "A".