# 4เลือกประเภท4. By next year, she ___ in this company for ten years.A) works B) will work C) will have worked D) is working
# 8เลือกประเภท8. I ___ my keys. I can’t find them anywhere.A) lost B) have lost C) lose D) was losing
# 10เลือกประเภท10. We ___ in the park when it started to rain.A) walked B) were walking C) are walking D) have walked
# 11เลือกประเภท11. By the time he arrived, we ___ eating.A) finish B) finished C) had finished D) finishing
# 16เลือกประเภท16. They ___ for an hour before the teacher arrived.A) wait B) were waiting C) had been waiting D) have been waiting
# 20เลือกประเภท20. They ___ in the garden all afternoon.A) have been working B) worked C) work D) are working