The suggestion _____more samples be included in the experiment will be carefully considered

With the help of the foreign experts, theyproduced ___ washing machines in 2003 as the year before.

It was not until the subprime loan crisis (次贷危机) ____ great damage to the American financial system that Americans ____ the severity of the situation.

It’s so kind of you to give me a ride to school. -_________.

下列字母中含有相同读音的一组是________.