13.The professor appreciated the students for ________ their essays on time. A. having completed B. completed C. having compete D. compete

19. The railways made a direct physical influence _________the landscape. A. in B. from C. on D. for

4. A. control B. discover C. decide D. commuter

3. A. control B. congestion C. efficient D. commuter

9.David, don't forget to ______________ your phone before going to school. A. install B. charge C. use D. control

21. The student apologized for _______ to do homework. A. having forgotten B. forgot C. having completed D. complete

5. A. system B. journey C. office D. machine

14.In the future, cars and drones _______ controlled by artificial intelligence. A. will be controlled B. are controlled to C. will controlled be D. won’t be control

13.Modern technology has made a significant impact _________ the way we communicate. A. in B. from C. on D. for

7.A. install B. hybrid C. abroad D. design

1. A. campus B. anger C. canyon D. drama

10.We must __________ natural forests because they play a crucial role in maintaining biodiversity. A. reserve B. preserve C. observe D. deserve

12.Learning effective time management helps students complete their tasks and ______ deadlines easily. A. assignment B. chores C. duty D. exercise