21. Don’t stand out in ____ cold or you’ll catch ____ cold.
A. the, a B. the, the C. a, a D. a, the
22. He cannot hide his feelings, except ____ the writers ask if everything is all right.
A. how B. that C. why D. when
23. When this happens, he smiles and nods, ____ that everything is fine.
A. indicated B. indicating C. to indicate D. indicate
