Question

Do not eat the cake, wait your friends come.

• A. when
• B. for
• C. till
• D. as
• A. for
• B. else
• C. then
• D. still

Answer 1

The Correct Option is C

1. Option A: "When" does not mark a stopping point for the waiting, so it reads awkwardly here.
2. Option B: "For" needs a to-infinitive after it, so "for your friends come" is ungrammatical.
3. Option C: "Till" correctly marks the point up to which the waiting continues, giving a natural sentence.
4. Option D: "As" implies the two actions happen together, changing the intended meaning.

The correct conjunction is till.

Answer 2

1. Option A: "For" would reverse the cause and effect of the sentence.
2. Option B: "Else" gives the correct negative-consequence warning if the advice is ignored.
3. Option C: "Then" needs a preceding "if" clause that is not present here.
4. Option D: "Still" wrongly implies failure despite studying hard.

The word that fits is else.