It's _________ impossible to make such a long journey in such an old car.

—What do you think of the dish? —It is sweet and sour, but isn’t __________.

Would you like to drink milk?Thank you, but just_________

The new road is much _______ than before. Six cars can pass it at the same time. 

—What do you think of the lecture of Li Yang s Crazy English? —I think it's_________，but someone thinks it's much too _______.