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13. Where they (stop)....................... on their way back last Sunday?
14. What the student (wear).................... at school two years ago?
15. Where you (put) .................. the cake yesterday?
16. We seldom (eat) .................................. before 6:30.
17. The sun (set) ................................. in the West.
18. It (be) _______often hot in summer.
19. My mother sometimes (buy) ...............................vegetables at this market.
20. It (rain) ............................ much in summer. It (rain) now.
21. The earth (circle) ............................... the sun once every 365 days.
22. The farmers (work) ..................................... in the field at the moment.
23. Rivers usually (flow) ................................. to the sea.