UTS INTERMEDIATE ENGLISH GRAMMAR

      I don’t know ___ she will come to the meeting.

• A. who

• B. what

• C. whether

• D. that

Answer explanation

✅ Answer: C. whether — expresses doubt or choice.

  The teacher explained ___ the project should be completed.

• A. how

• B. what

• C. who

• D. that

Answer explanation

✅ Answer: A. how — manner of completion.

      Please tell me ___ you borrowed my book.

• A. who

• B. what

• C. where

• D. why

Answer explanation

✅ Answer: D. why — reason clause.

I wonder ___ is knocking at the door.

• A. who

• B. whom

• C. what

• D. whose

Answer explanation

✅ Answer: A. who — subject of the noun clause.

     I’m not sure ___ they’ll finish the work on time.

• A. who

• B. when

• C. if

• D. that

Answer explanation

✅ Answer: C. if — interchangeable with “whether” in informal contexts.

      ___ he will arrive on time is uncertain.

• A. When

• B. That

• C. Whether

• D. What

Answer explanation

✅ Answer: C. Whether — subject of the sentence.

     ___ you said made everyone laugh.

• A. That

• B. What

• C. When

• D. Whom

Answer explanation

✅ Answer: B. What — acts as subject.

___ caused the accident remains a mystery.

• A. What

• B. Which

• C. When

• D. Why

Answer explanation

✅ Answer: A. What — subject noun clause.

     We don’t know ___ she said that made him so angry.

• A. what

• B. that

• C. when

• D. whether

Answer explanation

✅ Answer: A. what — object of “know,” with embedded clause “she said.”

he police discovered ___ he had hidden the documents that were stolen.

• A. when

• B. where

• C. that

• D. what

Answer explanation

✅ Answer: B. where — noun clause with adjective clause “that were stolen.”