Individually boil the vegetables until just tender. Cool in ice cold water to stop the cooking. Drain well, pat dry and place on a platter. Combine the lemon, olive oil, thyme, sugar, salt and pepper in a bowl. Brush the mixture on the vegetables. Cover and marinate the vegetables in the fridge 20 minutes. Preheat the grill to medium-high. Season the steaks with thyme, salt and pepper. Cook to desired doneness. Allow 2-3 min. per side for rare, 3-4 min. for medium-rare, and 4-5 min. for medium. Place steaks and vegetables on plates and serve.