Circle the correct options.
1.Many people over 50 have joined или has joined.
2.My brother is posted или has posted all his holiday photos online.I've uploaded или ' uploaded my best three.
3.My grandfather has a mobile phone but he hasn't sent или hasen't send a text message.

1.Many people over 50 have joined.

2.My brother has posted all his holiday photos online. I've  uploaded my best three.

3.My grandfather has a mobile phone but he hasn't sent  a text message.