Choose the correct form of the verbs.

These jeans are/be exactly what I've been looking for!
1 My favourite TV series is/are about to end for the season.
2 A lot of children was/were outside the school when we arrived.
3 Not all knowledge seem/seems useful to me.
4 Her manners doesn't/don't reflect her careful upbringing.
5 The progress we have made is/are not enough.
6 That pair of trousers look/looks really good on you!
7 I think politics is/are risky to discuss with strangers.
8 The new glasses you bought really suits/suit you.
9 It's hard to name all the species that is/are in danger.
10 My luggage stand/stands out because of its unusual colour.