WE TOOK A TAXI TO WORK LAST WEEK. AND THEY SAW THIS.A. THEY SAW US...

4. We took a taxi to work last week. And they saw this.

A. They saw us take a taxi to work last week. B. They saw a taxi we took to work last week.

C. They saw us took a taxi to work last week. D. They saw we took a taxi to work last week.