Complete the sentences using the present simple or present continuous form of the verbs in brackets. 1 my sister often (send) text messages to her friends. 2 at the moment, i (learn) to use a new computer program. 3 symbols (become) more and more common in advertising. 4 i (not / own) a mobile phone at the moment. 5 i usually (understand) the symbols i see in other countries. 6 how many symbols (you / have) on your mobile? 7 john never (send) me emails or text messages. 8 red sometimes (mean) 'danger' or 'stop'. 9 (you / know) what this symbol means? 10 this mobile phone (belong) to my sister.