Combine first 4 ingredients and 3/4 cup water; bring to boiling.
Reduce heat; simmer 5 minutes.
Trim fat from meat; cut in 1-inch cubes.
Add meat and mushrooms to marinade; toss to coat
Cover; marinate in refrigerator several hours or overnight.
Drain; reserve marinade.
Thread skewers alternately with meat, mushrooms , and tomatoes.
Broil 3 inches from heat, 5 to 10 minutes; brush with reserved marinade.
Turn; broil 4 to 5 minutes longer.
Brush with marinade