Revise these sentences to eliminate dangling phrases: (a) Before rejecting these designs, we suggest that you compare them with other plans. (b) Relying on his ability to react quickly in emergencies,...

Revise these sentences to eliminate dangling phrases:

(a) Before rejecting these designs, we suggest that you compare them with other plans.

(b) Relying on his ability to react quickly in emergencies, the car picked up speed.

(c) Already filled with students, the visitors could find no place in the auditorium.

(d) Referring to your letter of March 13, your complaint was ill-advised.

(e) Having sent the incorrect invoices to you, we assure you that we will adjust it at once.