Ôn thi Cấp tốc 789+ vào 10 môn Tiếng Anh (đề 21)

Read the following passage and mark the letter A, B, C, or D to indicate the correct word or phrase...

31/40

Research involving students aged 14-19 over a three-week period now appears to confirm (31) ______.

those

that

this

there