While Tom and I ____, someone ____ at the door.      A. were talking - knocked          B. were talking - was knocking      C. talked - knocked                    D. talked - was knocking

Stress of noun with two-syllable

i/d/n/t/o/a/n/o

h/r/a/i/y/c/t         e/l/m/a

While the teacher was explaining to the whole class, she ____ carefully.     A. didn't listen                        B. wasn't listening      C. had listened                       D. wasn't listened

They are going to treat drinking water and widen roads in_________areas.A. private B. remote C. accessible D. secret

When we were on a voluntary tour, we ____ to public places to collect rubbish every day.     A. were going                         B. went     C. have gone                          D. had gone

l/t/r/o/e/v/e/u/n

o/m/n/i/u/m/t/c/y

Stress of verb with two-syllable

p/o/h/a/e/g/r/n/a

The phone was engaged when I called. Who ____ to?      A. were you talking                    B. were you talked               C. did you talk                D. have you talked