下列递变规律不正确的是A、 Na、Mg、Al还原性依次减弱 B、 I2、Br2、Cl2氧化性依次增强C、 C、N、O原子半径依次增大 D、 P、S、Cl最高正价依次升高
The children loved their day trip, and they enjoyed the horse ride ______.
Progress______ so far very good and we are sure that the work will be finished on time.
Charles was alone at home, with_______ looking after him.
It is often ______ that human beings are naturally equipped to speak.