Изберите правильную форму герундия 1. She is looking forward to (having

Выберите правильную форму герундия 1. She is looking forward to (having sent, being sent) to Moscow on business. 2. Before (sent, being sent) to the warehouse, the cases were counted and marked. 3. I remember (giving, having been given) this instruction by the chief engineer. 4. I am surprised at your (having missed, being missed) so many lessons. 5. We insisted on the contract (having been signed, being signed) immediately.