_______cloning human embryos is not legal in many countries, some scientists are already pushing ahead with research in order to produce a cloned human baby

In the Gulf of Mexico the animals’ presence close to shore means their usual habitat is badly polluted, and the crowding could ________ mass die-offs as fish run out of oxygen.

So many problems! I’m tired.—You should try to _________ them by yourself. You are not a child any longer.

u like the food in ourrestaurant, Madame — Yes, _________any description. I will come again with my best friend.

Though ______ to see us, the professor gave us a warmwelcome.